42931340 has 24 divisors (see below), whose sum is σ = 94076640. Its totient is φ = 16425728.

The previous prime is 42931321. The next prime is 42931349. The reversal of 42931340 is 4313924.

It is not an unprimeable number, because it can be changed into a prime (42931349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46205 + ... + 47124.

It is an arithmetic number, because the mean of its divisors is an integer number (3919860).

Almost surely, 2^42931340 is an apocalyptic number.

It is an amenable number.

42931340 is an abundant number, since it is smaller than the sum of its proper divisors (51145300).

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

42931340 is a wasteful number, since it uses less digits than its factorization.

42931340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93361 (or 93359 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 42931340 is about 6552.2011568632. The cubic root of 42931340 is about 350.1532390207.

The spelling of 42931340 in words is "forty-two million, nine hundred thirty-one thousand, three hundred forty".