40842994 has 4 divisors (see below), whose sum is σ = 61264494. Its totient is φ = 20421496.

The previous prime is 40842979. The next prime is 40843013. The reversal of 40842994 is 49924804.

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., 36060025 + 4782969 = 6005^2 + 2187^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10210747 + ... + 10210750.

Almost surely, 2^40842994 is an apocalyptic number.

40842994 is a deficient number, since it is larger than the sum of its proper divisors (20421500).

40842994 is a wasteful number, since it uses less digits than its factorization.

40842994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20421499.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 40842994 is about 6390.8523688159. The cubic root of 40842994 is about 344.3810058757.

The spelling of 40842994 in words is "forty million, eight hundred forty-two thousand, nine hundred ninety-four".