40112172 has 30 divisors (see below), whose sum is σ = 104861988. Its totient is φ = 13370616.

The previous prime is 40112167. The next prime is 40112183. The reversal of 40112172 is 27121104.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 61578 + ... + 62225.

Almost surely, 2^40112172 is an apocalyptic number.

It is an amenable number.

40112172 is an abundant number, since it is smaller than the sum of its proper divisors (64749816).

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

40112172 is a wasteful number, since it uses less digits than its factorization.

40112172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123819 (or 123808 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 40112172 is about 6333.4170871655. The cubic root of 40112172 is about 342.3145766716.

Adding to 40112172 its reverse (27121104), we get a palindrome (67233276).

The spelling of 40112172 in words is "forty million, one hundred twelve thousand, one hundred seventy-two".