139815041 has 2 divisors, whose sum is σ = 139815042. Its totient is φ = 139815040.

The previous prime is 139815031. The next prime is 139815161. The reversal of 139815041 is 140518931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122766400 + 17048641 = 11080^2 + 4129^2 .

It is a cyclic number.

It is not a de Polignac number, because 139815041 - 2¹⁴ = 139798657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139814989 and 139815007.

It is not a weakly prime, because it can be changed into another prime (139815001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69907520 + 69907521.

It is an arithmetic number, because the mean of its divisors is an integer number (69907521).

Almost surely, 2^139815041 is an apocalyptic number.

It is an amenable number.

139815041 is a deficient number, since it is larger than the sum of its proper divisors (1).

139815041 is an equidigital number, since it uses as much as digits as its factorization.

139815041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 139815041 is about 11824.3410387218. The cubic root of 139815041 is about 519.0206430979.

The spelling of 139815041 in words is "one hundred thirty-nine million, eight hundred fifteen thousand, forty-one".