123479974321 has 32 divisors (see below), whose sum is σ = 141173020800. Its totient is φ = 106975303680.

The previous prime is 123479974313. The next prime is 123479974327.

It is a happy number.

123479974321 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 123479974321 - 2³ = 123479974313 is a prime.

It is a super-2 number, since 2×123479974321² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123479974327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7662945 + ... + 7679041.

It is an arithmetic number, because the mean of its divisors is an integer number (4411656900).

Almost surely, 2^123479974321 is an apocalyptic number.

123479974321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123479974321 is a deficient number, since it is larger than the sum of its proper divisors (17693046479).

123479974321 is a wasteful number, since it uses less digits than its factorization.

123479974321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16449.

The product of its digits is 2286144, while the sum is 52.

The spelling of 123479974321 in words is "one hundred twenty-three billion, four hundred seventy-nine million, nine hundred seventy-four thousand, three hundred twenty-one".