42190278 has 16 divisors (see below), whose sum is σ = 90871536. Its totient is φ = 12981600.

The previous prime is 42190231. The next prime is 42190307. The reversal of 42190278 is 87209124.

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 7 ways as a sum of consecutive naturals, for example, 270373 + ... + 270528.

It is an arithmetic number, because the mean of its divisors is an integer number (5679471).

Almost surely, 2^42190278 is an apocalyptic number.

42190278 is an abundant number, since it is smaller than the sum of its proper divisors (48681258).

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

42190278 is a wasteful number, since it uses less digits than its factorization.

42190278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540919.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 42190278 is about 6495.4043754027. The cubic root of 42190278 is about 348.1268034399.

The spelling of 42190278 in words is "forty-two million, one hundred ninety thousand, two hundred seventy-eight".