42138210 has 32 divisors (see below), whose sum is σ = 102140352. Its totient is φ = 11124800.

The previous prime is 42138209. The next prime is 42138221. The reversal of 42138210 is 1283124.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3924 + ... + 9983.

It is an arithmetic number, because the mean of its divisors is an integer number (3191886).

Almost surely, 2^42138210 is an apocalyptic number.

42138210 is an abundant number, since it is smaller than the sum of its proper divisors (60002142).

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

42138210 is a wasteful number, since it uses less digits than its factorization.

42138210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14018.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 42138210 is about 6491.3950734800. The cubic root of 42138210 is about 347.9835340340.

The spelling of 42138210 in words is "forty-two million, one hundred thirty-eight thousand, two hundred ten".