42192394 has 8 divisors (see below), whose sum is σ = 64155780. Its totient is φ = 20807136.

The previous prime is 42192377. The next prime is 42192401. The reversal of 42192394 is 49329124.

It can be written as a sum of positive squares in 2 ways, for example, as 38601369 + 3591025 = 6213^2 + 1895^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×42192394² = 3560396222902472, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144349 + ... + 144640.

Almost surely, 2^42192394 is an apocalyptic number.

42192394 is a deficient number, since it is larger than the sum of its proper divisors (21963386).

42192394 is a wasteful number, since it uses less digits than its factorization.

42192394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289064.

The product of its digits is 15552, while the sum is 34.

The square root of 42192394 is about 6495.5672577536. The cubic root of 42192394 is about 348.1326232957.

The spelling of 42192394 in words is "forty-two million, one hundred ninety-two thousand, three hundred ninety-four".