40342994 has 4 divisors (see below), whose sum is σ = 60514494. Its totient is φ = 20171496.

The previous prime is 40342949. The next prime is 40342999. The reversal of 40342994 is 49924304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 29019769 + 11323225 = 5387^2 + 3365^2 .

It is not an unprimeable number, because it can be changed into a prime (40342999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10085747 + ... + 10085750.

Almost surely, 2^40342994 is an apocalyptic number.

40342994 is a deficient number, since it is larger than the sum of its proper divisors (20171500).

40342994 is a wasteful number, since it uses less digits than its factorization.

40342994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20171499.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 40342994 is about 6351.6134957977. The cubic root of 40342994 is about 342.9699276930.

The spelling of 40342994 in words is "forty million, three hundred forty-two thousand, nine hundred ninety-four".