42978200 has 24 divisors (see below), whose sum is σ = 99924780. Its totient is φ = 17191200.

The previous prime is 42978181. The next prime is 42978223. The reversal of 42978200 is 287924.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 107246 + ... + 107645.

Almost surely, 2^42978200 is an apocalyptic number.

42978200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42978200 is an abundant number, since it is smaller than the sum of its proper divisors (56946580).

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

42978200 is a wasteful number, since it uses less digits than its factorization.

42978200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214907 (or 214898 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 42978200 is about 6555.7760791534. The cubic root of 42978200 is about 350.2805913193.

The spelling of 42978200 in words is "forty-two million, nine hundred seventy-eight thousand, two hundred".