123134102420 has 72 divisors (see below), whose sum is σ = 305362657152. Its totient is φ = 40855510080.

The previous prime is 123134102369. The next prime is 123134102447. The reversal of 123134102420 is 24201431321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323072 + ... + 592151.

It is an arithmetic number, because the mean of its divisors is an integer number (4241148016).

Almost surely, 2^123134102420 is an apocalyptic number.

123134102420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123134102420 is an abundant number, since it is smaller than the sum of its proper divisors (182228554732).

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

123134102420 is a wasteful number, since it uses less digits than its factorization.

123134102420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915301 (or 915268 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 123134102420 its reverse (24201431321), we get a palindrome (147335533741).

The spelling of 123134102420 in words is "one hundred twenty-three billion, one hundred thirty-four million, one hundred two thousand, four hundred twenty".