1072139 has 4 divisors (see below), whose sum is σ = 1135224. Its totient is φ = 1009056.

The previous prime is 1072133. The next prime is 1072147. The reversal of 1072139 is 9312701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9312701 = 2417 ⋅3853.

It is a cyclic number.

It is not a de Polignac number, because 1072139 - 2²⁰ = 23563 is a prime.

It is a super-2 number, since 2×1072139² = 2298964070642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1072133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31517 + ... + 31550.

It is an arithmetic number, because the mean of its divisors is an integer number (283806).

2^1072139 is an apocalyptic number.

1072139 is a deficient number, since it is larger than the sum of its proper divisors (63085).

1072139 is an equidigital number, since it uses as much as digits as its factorization.

1072139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63084.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1072139 is about 1035.4414517490. The cubic root of 1072139 is about 102.3490222232.

The spelling of 1072139 in words is "one million, seventy-two thousand, one hundred thirty-nine".