123240012104 has 16 divisors (see below), whose sum is σ = 252081843120. Its totient is φ = 56018187280.

The previous prime is 123240012089. The next prime is 123240012127. The reversal of 123240012104 is 401210042321.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700227254 + ... + 700227429.

It is an arithmetic number, because the mean of its divisors is an integer number (15755115195).

Almost surely, 2^123240012104 is an apocalyptic number.

It is an amenable number.

123240012104 is an abundant number, since it is smaller than the sum of its proper divisors (128841831016).

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

123240012104 is a wasteful number, since it uses less digits than its factorization.

123240012104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400454700 (or 1400454696 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 123240012104 its reverse (401210042321), we get a palindrome (524450054425).

The spelling of 123240012104 in words is "one hundred twenty-three billion, two hundred forty million, twelve thousand, one hundred four".