123739445530 has 8 divisors (see below), whose sum is σ = 222731001972. Its totient is φ = 49495778208.

The previous prime is 123739445503. The next prime is 123739445563. The reversal of 123739445530 is 35544937321.

It can be written as a sum of positive squares in 2 ways, for example, as 114611362849 + 9128082681 = 338543^2 + 95541^2 .

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

It is a super-2 number, since 2×123739445530² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6186972267 + ... + 6186972286.

Almost surely, 2^123739445530 is an apocalyptic number.

123739445530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123739445530 is a deficient number, since it is larger than the sum of its proper divisors (98991556442).

123739445530 is a wasteful number, since it uses less digits than its factorization.

123739445530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12373944560.

The product of its (nonzero) digits is 1360800, while the sum is 46.

The spelling of 123739445530 in words is "one hundred twenty-three billion, seven hundred thirty-nine million, four hundred forty-five thousand, five hundred thirty".