40042177 has 32 divisors (see below), whose sum is σ = 50585600. Its totient is φ = 30932928.

The previous prime is 40042153. The next prime is 40042181. The reversal of 40042177 is 77124004.

It is a cyclic number.

It is not a de Polignac number, because 40042177 - 2¹¹ = 40040129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40042187) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 388708 + ... + 388810.

It is an arithmetic number, because the mean of its divisors is an integer number (1580800).

Almost surely, 2^40042177 is an apocalyptic number.

It is an amenable number.

40042177 is a deficient number, since it is larger than the sum of its proper divisors (10543423).

40042177 is a wasteful number, since it uses less digits than its factorization.

40042177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 40042177 is about 6327.8888264571. Note that the first 4 decimals coincide. The cubic root of 40042177 is about 342.1153498710.

The spelling of 40042177 in words is "forty million, forty-two thousand, one hundred seventy-seven".