912199390542 has 48 divisors (see below), whose sum is σ = 2230456204080. Its totient is φ = 266892192000.

The previous prime is 912199390507. The next prime is 912199390561. The reversal of 912199390542 is 245093991219.

912199390542 is a `hidden beast` number, since 9 + 1 + 2 + 1 + 9 + 9 + 3 + 90 + 542 = 666.

It is a super-4 number, since 4×912199390542⁴ (a number of 49 digits) contains 4444 as substring.

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, 79426459 + ... + 79437942.

It is an arithmetic number, because the mean of its divisors is an integer number (46467837585).

Almost surely, 2^912199390542 is an apocalyptic number.

912199390542 is an abundant number, since it is smaller than the sum of its proper divisors (1318256813538).

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

912199390542 is a wasteful number, since it uses less digits than its factorization.

912199390542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158864449 (or 158864446 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 54.

The spelling of 912199390542 in words is "nine hundred twelve billion, one hundred ninety-nine million, three hundred ninety thousand, five hundred forty-two".