123075590020 has 12 divisors (see below), whose sum is σ = 258458739084. Its totient is φ = 49230236000.

The previous prime is 123075590009. The next prime is 123075590041. The reversal of 123075590020 is 20095570321.

It can be written as a sum of positive squares in 2 ways, for example, as 86737318144 + 36338271876 = 294512^2 + 190626^2 .

It is a super-2 number, since 2×123075590020² (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, 3076889731 + ... + 3076889770.

It is an arithmetic number, because the mean of its divisors is an integer number (21538228257).

Almost surely, 2^123075590020 is an apocalyptic number.

123075590020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123075590020 is an abundant number, since it is smaller than the sum of its proper divisors (135383149064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123075590020 is a wasteful number, since it uses less digits than its factorization.

123075590020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6153779510 (or 6153779508 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 34.

The spelling of 123075590020 in words is "one hundred twenty-three billion, seventy-five million, five hundred ninety thousand, twenty".