1373139 has 8 divisors (see below), whose sum is σ = 2034320. Its totient is φ = 915408.

The previous prime is 1373137. The next prime is 1373147. The reversal of 1373139 is 9313731.

It is not a de Polignac number, because 1373139 - 2¹ = 1373137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 50857 = 1373139 / (1 + 3 + 7 + 3 + 1 + 3 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1373137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25402 + ... + 25455.

It is an arithmetic number, because the mean of its divisors is an integer number (254290).

2^1373139 is an apocalyptic number.

1373139 is a deficient number, since it is larger than the sum of its proper divisors (661181).

1373139 is an equidigital number, since it uses as much as digits as its factorization.

1373139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50866 (or 50860 counting only the distinct ones).

The product of its digits is 1701, while the sum is 27.

The square root of 1373139 is about 1171.8101382050. The cubic root of 1373139 is about 111.1488142789.

The spelling of 1373139 in words is "one million, three hundred seventy-three thousand, one hundred thirty-nine".