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124212413 = 1312137877
BaseRepresentation
bin1110110011101…
…01010010111101
322122201122101202
413121311102331
5223244244123
620154145245
73035534213
oct731652275
9278648352
10124212413
1164129696
1235722225
131c970390
14126d4cb3
15ad88a28
hex76754bd

124212413 has 8 divisors (see below), whose sum is σ = 133894488. Its totient is φ = 114548544.

The previous prime is 124212391. The next prime is 124212419. The reversal of 124212413 is 314212421.

It can be written as a sum of positive squares in 4 ways, for example, as 9872164 + 114340249 = 3142^2 + 10693^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 124212413 - 26 = 124212349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124212419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11831 + ... + 19707.

It is an arithmetic number, because the mean of its divisors is an integer number (16736811).

Almost surely, 2124212413 is an apocalyptic number.

124212413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

124212413 is a deficient number, since it is larger than the sum of its proper divisors (9682075).

124212413 is a wasteful number, since it uses less digits than its factorization.

124212413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9103.

The product of its digits is 384, while the sum is 20.

The square root of 124212413 is about 11145.0622699023. The cubic root of 124212413 is about 498.9476707601.

Adding to 124212413 its reverse (314212421), we get a palindrome (438424834).

The spelling of 124212413 in words is "one hundred twenty-four million, two hundred twelve thousand, four hundred thirteen".

Divisors: 1 13 1213 7877 15769 102401 9554801 124212413