40122864 has 100 divisors (see below), whose sum is σ = 117841416. Its totient is φ = 13177728.

The previous prime is 40122853. The next prime is 40122871. The reversal of 40122864 is 46822104.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 107382 + ... + 107754.

Almost surely, 2^40122864 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 40122864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58920708).

40122864 is an abundant number, since it is smaller than the sum of its proper divisors (77718552).

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

40122864 is a wasteful number, since it uses less digits than its factorization.

40122864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 40122864 is about 6334.2611250248. The cubic root of 40122864 is about 342.3449889058.

Adding to 40122864 its reverse (46822104), we get a palindrome (86944968).

The spelling of 40122864 in words is "forty million, one hundred twenty-two thousand, eight hundred sixty-four".