123457012 has 48 divisors (see below), whose sum is σ = 255104640. Its totient is φ = 51172992.

The previous prime is 123456979. The next prime is 123457067. The reversal of 123457012 is 210754321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278463 + ... + 278905.

It is an arithmetic number, because the mean of its divisors is an integer number (5314680).

Almost surely, 2^123457012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123457012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127552320).

123457012 is an abundant number, since it is smaller than the sum of its proper divisors (131647628).

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

123457012 is a wasteful number, since it uses less digits than its factorization.

123457012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 123457012 is about 11111.1210955511. The cubic root of 123457012 is about 497.9341590240.

The spelling of 123457012 in words is "one hundred twenty-three million, four hundred fifty-seven thousand, twelve".