42922790 has 32 divisors (see below), whose sum is σ = 82360800. Its totient is φ = 16049664.

The previous prime is 42922787. The next prime is 42922793. The reversal of 42922790 is 9722924.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42922787) and next prime (42922793).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42922790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42922793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26936 + ... + 28484.

It is an arithmetic number, because the mean of its divisors is an integer number (2573775).

Almost surely, 2^42922790 is an apocalyptic number.

42922790 is a deficient number, since it is larger than the sum of its proper divisors (39438010).

42922790 is a wasteful number, since it uses less digits than its factorization.

42922790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 42922790 is about 6551.5486718790. The cubic root of 42922790 is about 350.1299925302.

The spelling of 42922790 in words is "forty-two million, nine hundred twenty-two thousand, seven hundred ninety".