1047139 has 2 divisors, whose sum is σ = 1047140. Its totient is φ = 1047138.

The previous prime is 1047133. The next prime is 1047157. The reversal of 1047139 is 9317401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1047139 - 2³ = 1047131 is a prime.

It is an Ulam number.

1047139 is a lucky number.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (1047131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523569 + 523570.

It is an arithmetic number, because the mean of its divisors is an integer number (523570).

2^1047139 is an apocalyptic number.

1047139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1047139 is an equidigital number, since it uses as much as digits as its factorization.

1047139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 1047139 is about 1023.2980992849. The cubic root of 1047139 is about 101.5472371068.

The spelling of 1047139 in words is "one million, forty-seven thousand, one hundred thirty-nine".