40342947 has 16 divisors (see below), whose sum is σ = 57077760. Its totient is φ = 25274592.

The previous prime is 40342933. The next prime is 40342949. The reversal of 40342947 is 74924304.

It is not a de Polignac number, because 40342947 - 2⁴ = 40342931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40342949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4453 + ... + 10025.

It is an arithmetic number, because the mean of its divisors is an integer number (3567360).

Almost surely, 2^40342947 is an apocalyptic number.

40342947 is a deficient number, since it is larger than the sum of its proper divisors (16734813).

40342947 is a wasteful number, since it uses less digits than its factorization.

40342947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5722.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 40342947 is about 6351.6097959494. The cubic root of 40342947 is about 342.9697945051.

The spelling of 40342947 in words is "forty million, three hundred forty-two thousand, nine hundred forty-seven".