123004420511 has 16 divisors (see below), whose sum is σ = 147989256960. Its totient is φ = 99873829440.

The previous prime is 123004420507. The next prime is 123004420543. The reversal of 123004420511 is 115024400321.

It is not a de Polignac number, because 123004420511 - 2² = 123004420507 is a prime.

It is a super-2 number, since 2×123004420511² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123004420111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1595720 + ... + 1671026.

It is an arithmetic number, because the mean of its divisors is an integer number (9249328560).

Almost surely, 2^123004420511 is an apocalyptic number.

123004420511 is a deficient number, since it is larger than the sum of its proper divisors (24984836449).

123004420511 is a wasteful number, since it uses less digits than its factorization.

123004420511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87614.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 123004420511 its reverse (115024400321), we get a palindrome (238028820832).

The spelling of 123004420511 in words is "one hundred twenty-three billion, four million, four hundred twenty thousand, five hundred eleven".