42012798 has 16 divisors (see below), whose sum is σ = 84395280. Its totient is φ = 13942656.

The previous prime is 42012787. The next prime is 42012821. The reversal of 42012798 is 89721024.

It is a happy number.

It is a Curzon 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, 13915 + ... + 16662.

It is an arithmetic number, because the mean of its divisors is an integer number (5274705).

Almost surely, 2^42012798 is an apocalyptic number.

42012798 is an abundant number, since it is smaller than the sum of its proper divisors (42382482).

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

42012798 is a wasteful number, since it uses less digits than its factorization.

42012798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30811.

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

The square root of 42012798 is about 6481.7280103380. The cubic root of 42012798 is about 347.6379674023.

The spelling of 42012798 in words is "forty-two million, twelve thousand, seven hundred ninety-eight".