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124021061 = 697117791
BaseRepresentation
bin1110110010001…
…10100101000101
322122100220220122
413121012211011
5223222133221
620150111325
73034106303
oct731064505
9278326818
10124021061
116400894a
123564b545
131c904258
1412685273
15ad4beab
hex7646945

124021061 has 4 divisors (see below), whose sum is σ = 124045824. Its totient is φ = 123996300.

The previous prime is 124021057. The next prime is 124021123. The reversal of 124021061 is 160120421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 160120421 = 439364739.

It is a cyclic number.

It is not a de Polignac number, because 124021061 - 22 = 124021057 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 (124021021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1925 + ... + 15866.

It is an arithmetic number, because the mean of its divisors is an integer number (31011456).

Almost surely, 2124021061 is an apocalyptic number.

It is an amenable number.

124021061 is a deficient number, since it is larger than the sum of its proper divisors (24763).

124021061 is an equidigital number, since it uses as much as digits as its factorization.

124021061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24762.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 124021061 is about 11136.4743523253. The cubic root of 124021061 is about 498.6913257317.

Adding to 124021061 its reverse (160120421), we get a palindrome (284141482).

The spelling of 124021061 in words is "one hundred twenty-four million, twenty-one thousand, sixty-one".

Divisors: 1 6971 17791 124021061