42790330 has 16 divisors (see below), whose sum is σ = 84024864. Its totient is φ = 15560080.

The previous prime is 42790313. The next prime is 42790331. The reversal of 42790330 is 3309724.

It is not an unprimeable number, because it can be changed into a prime (42790331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194392 + ... + 194611.

It is an arithmetic number, because the mean of its divisors is an integer number (5251554).

Almost surely, 2^42790330 is an apocalyptic number.

42790330 is a deficient number, since it is larger than the sum of its proper divisors (41234534).

42790330 is a wasteful number, since it uses less digits than its factorization.

42790330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389021.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 42790330 is about 6541.4318004547. The cubic root of 42790330 is about 349.7694536137.

The spelling of 42790330 in words is "forty-two million, seven hundred ninety thousand, three hundred thirty".