1238139 has 16 divisors (see below), whose sum is σ = 2096640. Its totient is φ = 707400.

The previous prime is 1238137. The next prime is 1238177. The reversal of 1238139 is 9318321.

It is not a de Polignac number, because 1238139 - 2¹ = 1238137 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3087 + ... + 3464.

It is an arithmetic number, because the mean of its divisors is an integer number (131040).

2^1238139 is an apocalyptic number.

1238139 is a deficient number, since it is larger than the sum of its proper divisors (858501).

1238139 is an equidigital number, since it uses as much as digits as its factorization.

1238139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6567 (or 6561 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 1238139 is about 1112.7169451392. The cubic root of 1238139 is about 107.3799344556.

The spelling of 1238139 in words is "one million, two hundred thirty-eight thousand, one hundred thirty-nine".