42690492 has 72 divisors (see below), whose sum is σ = 122354960. Its totient is φ = 12441600.

The previous prime is 42690481. The next prime is 42690509. The reversal of 42690492 is 29409624.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6492 + ... + 11292.

Almost surely, 2^42690492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42690492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61177480).

42690492 is an abundant number, since it is smaller than the sum of its proper divisors (79664468).

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

42690492 is a wasteful number, since it uses less digits than its factorization.

42690492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4843 (or 4838 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 42690492 is about 6533.7961400705. The cubic root of 42690492 is about 349.4972154972.

The spelling of 42690492 in words is "forty-two million, six hundred ninety thousand, four hundred ninety-two".