42990814 has 4 divisors (see below), whose sum is σ = 64486224. Its totient is φ = 21495406.

The previous prime is 42990803. The next prime is 42990817. The reversal of 42990814 is 41809924.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42990817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10747702 + ... + 10747705.

It is an arithmetic number, because the mean of its divisors is an integer number (16121556).

Almost surely, 2^42990814 is an apocalyptic number.

42990814 is a deficient number, since it is larger than the sum of its proper divisors (21495410).

42990814 is a wasteful number, since it uses less digits than its factorization.

42990814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21495409.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 42990814 is about 6556.7380609568. The cubic root of 42990814 is about 350.3148568088.

The spelling of 42990814 in words is "forty-two million, nine hundred ninety thousand, eight hundred fourteen".