40421115 has 24 divisors (see below), whose sum is σ = 80072928. Its totient is φ = 18478080.

The previous prime is 40421093. The next prime is 40421123. The reversal of 40421115 is 51112404.

It is not a de Polignac number, because 40421115 - 2⁸ = 40420859 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63846 + ... + 64475.

It is an arithmetic number, because the mean of its divisors is an integer number (3336372).

Almost surely, 2^40421115 is an apocalyptic number.

40421115 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40421115 is a deficient number, since it is larger than the sum of its proper divisors (39651813).

40421115 is a wasteful number, since it uses less digits than its factorization.

40421115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128339 (or 128336 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 40421115 is about 6357.7602188192. The cubic root of 40421115 is about 343.1911629508.

Adding to 40421115 its reverse (51112404), we get a palindrome (91533519).

The spelling of 40421115 in words is "forty million, four hundred twenty-one thousand, one hundred fifteen".