919925442 has 12 divisors (see below), whose sum is σ = 1993171830. Its totient is φ = 306641808.

The previous prime is 919925431. The next prime is 919925453. The reversal of 919925442 is 244529919.

919925442 is a `hidden beast` number, since 9 + 19 + 92 + 544 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (919925431) and next prime (919925453).

It can be written as a sum of positive squares in only one way, i.e., 619561881 + 300363561 = 24891^2 + 17331^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25553467 + ... + 25553502.

Almost surely, 2^919925442 is an apocalyptic number.

919925442 is an abundant number, since it is smaller than the sum of its proper divisors (1073246388).

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

919925442 is a wasteful number, since it uses less digits than its factorization.

919925442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51106977 (or 51106974 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 919925442 is about 30330.2726990708. The cubic root of 919925442 is about 972.5625522201.

The spelling of 919925442 in words is "nine hundred nineteen million, nine hundred twenty-five thousand, four hundred forty-two".