123420420152 has 32 divisors (see below), whose sum is σ = 245567548800. Its totient is φ = 58026692064.

The previous prime is 123420420143. The next prime is 123420420181. The reversal of 123420420152 is 251024024321.

It is a super-2 number, since 2×123420420152² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5673578 + ... + 5695289.

It is an arithmetic number, because the mean of its divisors is an integer number (7673985900).

Almost surely, 2^123420420152 is an apocalyptic number.

It is an amenable number.

123420420152 is a deficient number, since it is larger than the sum of its proper divisors (122147128648).

123420420152 is a wasteful number, since it uses less digits than its factorization.

123420420152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11368955 (or 11368951 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 123420420152 its reverse (251024024321), we get a palindrome (374444444473).

The spelling of 123420420152 in words is "one hundred twenty-three billion, four hundred twenty million, four hundred twenty thousand, one hundred fifty-two".