40942990 has 32 divisors (see below), whose sum is σ = 83897856. Its totient is φ = 14240160.

The previous prime is 40942973. The next prime is 40942997. The reversal of 40942990 is 9924904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40942997) 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, 5562 + ... + 10621.

It is an arithmetic number, because the mean of its divisors is an integer number (2621808).

Almost surely, 2^40942990 is an apocalyptic number.

40942990 is an abundant number, since it is smaller than the sum of its proper divisors (42954866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40942990 is a wasteful number, since it uses less digits than its factorization.

40942990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16224.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 40942990 is about 6398.6709557532. The cubic root of 40942990 is about 344.6618264361.

The spelling of 40942990 in words is "forty million, nine hundred forty-two thousand, nine hundred ninety".