40942690 has 8 divisors (see below), whose sum is σ = 73696860. Its totient is φ = 16377072.

The previous prime is 40942679. The next prime is 40942697. The reversal of 40942690 is 9624904.

It can be written as a sum of positive squares in 2 ways, for example, as 39980329 + 962361 = 6323^2 + 981^2 .

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

It is a super-2 number, since 2×40942690² = 3352607728872200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40942697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2047125 + ... + 2047144.

Almost surely, 2^40942690 is an apocalyptic number.

40942690 is a deficient number, since it is larger than the sum of its proper divisors (32754170).

40942690 is a wasteful number, since it uses less digits than its factorization.

40942690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4094276.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 40942690 is about 6398.6475133422. The cubic root of 40942690 is about 344.6609846249.

The spelling of 40942690 in words is "forty million, nine hundred forty-two thousand, six hundred ninety".