42909210 has 32 divisors (see below), whose sum is σ = 114425280. Its totient is φ = 11442384.

The previous prime is 42909197. The next prime is 42909221. The reversal of 42909210 is 1290924.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 79192 + ... + 79731.

It is an arithmetic number, because the mean of its divisors is an integer number (3575790).

Almost surely, 2^42909210 is an apocalyptic number.

42909210 is an abundant number, since it is smaller than the sum of its proper divisors (71516070).

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

42909210 is a wasteful number, since it uses less digits than its factorization.

42909210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158939 (or 158933 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 42909210 is about 6550.5121937143. The cubic root of 42909210 is about 350.0930636879.

The spelling of 42909210 in words is "forty-two million, nine hundred nine thousand, two hundred ten".