42940313 has 8 divisors (see below), whose sum is σ = 47493768. Its totient is φ = 38565504.

The previous prime is 42940309. The next prime is 42940343. The reversal of 42940313 is 31304924.

It can be written as a sum of positive squares in 4 ways, for example, as 7573504 + 35366809 = 2752^2 + 5947^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42940313 - 2² = 42940309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42940343) 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, 44156 + ... + 45117.

It is an arithmetic number, because the mean of its divisors is an integer number (5936721).

Almost surely, 2^42940313 is an apocalyptic number.

It is an amenable number.

42940313 is a deficient number, since it is larger than the sum of its proper divisors (4553455).

42940313 is a wasteful number, since it uses less digits than its factorization.

42940313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89323.

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

The square root of 42940313 is about 6552.8858528132. The cubic root of 42940313 is about 350.1776322816.

The spelling of 42940313 in words is "forty-two million, nine hundred forty thousand, three hundred thirteen".