42912790 has 16 divisors (see below), whose sum is σ = 77358240. Its totient is φ = 17139520.

The previous prime is 42912769. The next prime is 42912791. The reversal of 42912790 is 9721924.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42912791) 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, 4791 + ... + 10429.

It is an arithmetic number, because the mean of its divisors is an integer number (4834890).

Almost surely, 2^42912790 is an apocalyptic number.

42912790 is a deficient number, since it is larger than the sum of its proper divisors (34445450).

42912790 is a wasteful number, since it uses less digits than its factorization.

42912790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6407.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 42912790 is about 6550.7854490893. The cubic root of 42912790 is about 350.1027997353.

The spelling of 42912790 in words is "forty-two million, nine hundred twelve thousand, seven hundred ninety".