40642481 has 8 divisors (see below), whose sum is σ = 44524128. Its totient is φ = 36792000.

The previous prime is 40642477. The next prime is 40642489. The reversal of 40642481 is 18424604.

40642481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 40642481 - 2² = 40642477 is a prime.

It is a super-2 number, since 2×40642481² = 3303622523670722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40642489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5015 + ... + 10316.

It is an arithmetic number, because the mean of its divisors is an integer number (5565516).

Almost surely, 2^40642481 is an apocalyptic number.

It is an amenable number.

40642481 is a deficient number, since it is larger than the sum of its proper divisors (3881647).

40642481 is a wasteful number, since it uses less digits than its factorization.

40642481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15583.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 40642481 is about 6375.1455669655. The cubic root of 40642481 is about 343.8165175519.

The spelling of 40642481 in words is "forty million, six hundred forty-two thousand, four hundred eighty-one".