1372139 has 2 divisors, whose sum is σ = 1372140. Its totient is φ = 1372138.

The previous prime is 1372127. The next prime is 1372171. The reversal of 1372139 is 9312731.

It is a weak prime.

It is an emirp because it is prime and its reverse (9312731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1372139 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1372109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686069 + 686070.

It is an arithmetic number, because the mean of its divisors is an integer number (686070).

2^1372139 is an apocalyptic number.

1372139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372139 is an equidigital number, since it uses as much as digits as its factorization.

1372139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 26.

The square root of 1372139 is about 1171.3833702081. The cubic root of 1372139 is about 111.1218260408.

The spelling of 1372139 in words is "one million, three hundred seventy-two thousand, one hundred thirty-nine".