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124143293 = 197630169
BaseRepresentation
bin1110110011001…
…00011010111101
322122121010120202
413121210122331
5223240041133
620152453245
73035125541
oct731443275
9278533522
10124143293
116409176a
12356aa225
131c947a91
14126b7a21
15ad732e8
hex76646bd

124143293 has 4 divisors (see below), whose sum is σ = 124773660. Its totient is φ = 123512928.

The previous prime is 124143209. The next prime is 124143311. The reversal of 124143293 is 392341421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110208004 + 13935289 = 10498^2 + 3733^2 .

It is a cyclic number.

It is not a de Polignac number, because 124143293 - 210 = 124142269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124140293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314888 + ... + 315281.

It is an arithmetic number, because the mean of its divisors is an integer number (31193415).

Almost surely, 2124143293 is an apocalyptic number.

It is an amenable number.

124143293 is a deficient number, since it is larger than the sum of its proper divisors (630367).

124143293 is an equidigital number, since it uses as much as digits as its factorization.

124143293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630366.

The product of its digits is 5184, while the sum is 29.

The square root of 124143293 is about 11141.9609135915. The cubic root of 124143293 is about 498.8551044292.

The spelling of 124143293 in words is "one hundred twenty-four million, one hundred forty-three thousand, two hundred ninety-three".

Divisors: 1 197 630169 124143293