2147139 has 12 divisors (see below), whose sum is σ = 3153072. Its totient is φ = 1407600.

The previous prime is 2147137. The next prime is 2147161. The reversal of 2147139 is 9317412.

It is not a de Polignac number, because 2147139 - 2¹ = 2147137 is a prime.

It is a super-2 number, since 2×2147139² = 9220411770642, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (2147137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1407 + ... + 2504.

It is an arithmetic number, because the mean of its divisors is an integer number (262756).

2^2147139 is an apocalyptic number.

2147139 is a deficient number, since it is larger than the sum of its proper divisors (1005933).

2147139 is a wasteful number, since it uses less digits than its factorization.

2147139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3978 (or 3975 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 2147139 is about 1465.3119121880. The cubic root of 2147139 is about 129.0090132516.

The spelling of 2147139 in words is "two million, one hundred forty-seven thousand, one hundred thirty-nine".