40421313 has 12 divisors (see below), whose sum is σ = 59376720. Its totient is φ = 26490456.

The previous prime is 40421309. The next prime is 40421317. The reversal of 40421313 is 31312404.

It is an interprime number because it is at equal distance from previous prime (40421309) and next prime (40421317).

It is not a de Polignac number, because 40421313 - 2² = 40421309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40421317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37531 + ... + 38592.

It is an arithmetic number, because the mean of its divisors is an integer number (4948060).

Almost surely, 2^40421313 is an apocalyptic number.

It is an amenable number.

40421313 is a deficient number, since it is larger than the sum of its proper divisors (18955407).

40421313 is a wasteful number, since it uses less digits than its factorization.

40421313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76188 (or 76185 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40421313 is about 6357.7757903216. The cubic root of 40421313 is about 343.1917233158.

Adding to 40421313 its reverse (31312404), we get a palindrome (71733717).

The spelling of 40421313 in words is "forty million, four hundred twenty-one thousand, three hundred thirteen".