40402112 has 56 divisors (see below), whose sum is σ = 83887056. Its totient is φ = 19289088.

The previous prime is 40402091. The next prime is 40402123. The reversal of 40402112 is 21120404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145718 + ... + 145994.

Almost surely, 2^40402112 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 40402112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41943528).

40402112 is an abundant number, since it is smaller than the sum of its proper divisors (43484944).

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

40402112 is a wasteful number, since it uses less digits than its factorization.

40402112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 40402112 is about 6356.2655702857. The cubic root of 40402112 is about 343.1373735395.

Adding to 40402112 its reverse (21120404), we get a palindrome (61522516).

The spelling of 40402112 in words is "forty million, four hundred two thousand, one hundred twelve".