40542008 has 64 divisors (see below), whose sum is σ = 90538560. Its totient is φ = 16828416.

The previous prime is 40542001. The next prime is 40542041. The reversal of 40542008 is 80024504.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40542001) 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, 40166 + ... + 41162.

It is an arithmetic number, because the mean of its divisors is an integer number (1414665).

Almost surely, 2^40542008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40542008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45269280).

40542008 is an abundant number, since it is smaller than the sum of its proper divisors (49996552).

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

40542008 is a wasteful number, since it uses less digits than its factorization.

40542008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 40542008 is about 6367.2606354695. The cubic root of 40542008 is about 343.5329654563.

The spelling of 40542008 in words is "forty million, five hundred forty-two thousand, eight".