42940290 has 32 divisors (see below), whose sum is σ = 103237056. Its totient is φ = 11430720.

The previous prime is 42940267. The next prime is 42940307. The reversal of 42940290 is 9204924.

42940290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25680 + ... + 27300.

It is an arithmetic number, because the mean of its divisors is an integer number (3226158).

Almost surely, 2^42940290 is an apocalyptic number.

42940290 is an abundant number, since it is smaller than the sum of its proper divisors (60296766).

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

42940290 is a wasteful number, since it uses less digits than its factorization.

42940290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 42940290 is about 6552.8840978610. The cubic root of 42940290 is about 350.1775697601.

The spelling of 42940290 in words is "forty-two million, nine hundred forty thousand, two hundred ninety".