139130401 has 2 divisors, whose sum is σ = 139130402. Its totient is φ = 139130400.

The previous prime is 139130377. The next prime is 139130423. The reversal of 139130401 is 104031931.

It is an a-pointer prime, because the next prime (139130423) can be obtained adding 139130401 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70157376 + 68973025 = 8376^2 + 8305^2 .

It is a cyclic number.

It is not a de Polignac number, because 139130401 - 2⁷ = 139130273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139130461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69565200 + 69565201.

It is an arithmetic number, because the mean of its divisors is an integer number (69565201).

Almost surely, 2^139130401 is an apocalyptic number.

It is an amenable number.

139130401 is a deficient number, since it is larger than the sum of its proper divisors (1).

139130401 is an equidigital number, since it uses as much as digits as its factorization.

139130401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 139130401 is about 11795.3550603617. The cubic root of 139130401 is about 518.1720842170.

The spelling of 139130401 in words is "one hundred thirty-nine million, one hundred thirty thousand, four hundred one".