742412123556 has 24 divisors (see below), whose sum is σ = 1733156421024. Its totient is φ = 247347641280.

The previous prime is 742412123539. The next prime is 742412123581. The reversal of 742412123556 is 655321214247.

It is a happy number.

It is a super-2 number, since 2×742412123556² (a number of 25 digits) contains 22 as substring.

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, 15358185 + ... + 15406448.

It is an arithmetic number, because the mean of its divisors is an integer number (72214850876).

Almost surely, 2^742412123556 is an apocalyptic number.

It is an amenable number.

742412123556 is an abundant number, since it is smaller than the sum of its proper divisors (990744297468).

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

742412123556 is a wasteful number, since it uses less digits than its factorization.

742412123556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30766651 (or 30766649 counting only the distinct ones).

The product of its digits is 403200, while the sum is 42.

The spelling of 742412123556 in words is "seven hundred forty-two billion, four hundred twelve million, one hundred twenty-three thousand, five hundred fifty-six".