40137841 has 2 divisors, whose sum is σ = 40137842. Its totient is φ = 40137840.

The previous prime is 40137821. The next prime is 40137847. The reversal of 40137841 is 14873104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28090000 + 12047841 = 5300^2 + 3471^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40137841 is a prime.

It is a super-2 number, since 2×40137841² = 3222092560282562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40137847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20068920 + 20068921.

It is an arithmetic number, because the mean of its divisors is an integer number (20068921).

Almost surely, 2^40137841 is an apocalyptic number.

It is an amenable number.

40137841 is a deficient number, since it is larger than the sum of its proper divisors (1).

40137841 is an equidigital number, since it uses as much as digits as its factorization.

40137841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 40137841 is about 6335.4432362701. The cubic root of 40137841 is about 342.3875802744.

The spelling of 40137841 in words is "forty million, one hundred thirty-seven thousand, eight hundred forty-one".