40405112 has 32 divisors (see below), whose sum is σ = 86244480. Its totient is φ = 17566560.

The previous prime is 40405109. The next prime is 40405117. The reversal of 40405112 is 21150404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40405117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7958 + ... + 12005.

It is an arithmetic number, because the mean of its divisors is an integer number (2695140).

Almost surely, 2^40405112 is an apocalyptic number.

It is an amenable number.

40405112 is an abundant number, since it is smaller than the sum of its proper divisors (45839368).

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

40405112 is a wasteful number, since it uses less digits than its factorization.

40405112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20003 (or 19999 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 40405112 is about 6356.5015535277. The cubic root of 40405112 is about 343.1458663846.

Adding to 40405112 its reverse (21150404), we get a palindrome (61555516).

The spelling of 40405112 in words is "forty million, four hundred five thousand, one hundred twelve".