40115100 has 36 divisors (see below), whose sum is σ = 116067224. Its totient is φ = 10697280.

The previous prime is 40115093. The next prime is 40115143. The reversal of 40115100 is 151104.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66559 + ... + 67158.

Almost surely, 2^40115100 is an apocalyptic number.

It is an amenable number.

40115100 is an abundant number, since it is smaller than the sum of its proper divisors (75952124).

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

40115100 is a wasteful number, since it uses less digits than its factorization.

40115100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133734 (or 133727 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 40115100 is about 6333.6482377852. The cubic root of 40115100 is about 342.3229055873.

Adding to 40115100 its reverse (151104), we get a palindrome (40266204).

The spelling of 40115100 in words is "forty million, one hundred fifteen thousand, one hundred".