40602139 has 2 divisors, whose sum is σ = 40602140. Its totient is φ = 40602138.

The previous prime is 40602127. The next prime is 40602161. The reversal of 40602139 is 93120604.

40602139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40602139 is a prime.

It is equal to p_2468032 and since 40602139 and 2468032 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (40602109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20301069 + 20301070.

It is an arithmetic number, because the mean of its divisors is an integer number (20301070).

Almost surely, 2^40602139 is an apocalyptic number.

40602139 is a deficient number, since it is larger than the sum of its proper divisors (1).

40602139 is an equidigital number, since it uses as much as digits as its factorization.

40602139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 40602139 is about 6371.9807752378. The cubic root of 40602139 is about 343.7027216961.

The spelling of 40602139 in words is "forty million, six hundred two thousand, one hundred thirty-nine".