1500139 has 2 divisors, whose sum is σ = 1500140. Its totient is φ = 1500138.

The previous prime is 1500133. The next prime is 1500143. The reversal of 1500139 is 9310051.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1500139 - 2⁹ = 1499627 is a prime.

It is not a weakly prime, because it can be changed into another prime (1500133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 750069 + 750070.

It is an arithmetic number, because the mean of its divisors is an integer number (750070).

2^1500139 is an apocalyptic number.

1500139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1500139 is an equidigital number, since it uses as much as digits as its factorization.

1500139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 1500139 is about 1224.8016165894. The cubic root of 1500139 is about 114.4749600412.

The spelling of 1500139 in words is "one million, five hundred thousand, one hundred thirty-nine".