2139712 has 28 divisors (see below), whose sum is σ = 4318000. Its totient is φ = 1051776.

The previous prime is 2139691. The next prime is 2139733. The reversal of 2139712 is 2179312.

It is an interprime number because it is at equal distance from previous prime (2139691) and next prime (2139733).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4039 + ... + 4537.

2^2139712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2139712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2159000).

2139712 is an abundant number, since it is smaller than the sum of its proper divisors (2178288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2139712 is an equidigital number, since it uses as much as digits as its factorization.

2139712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 568 counting only the distinct ones).

The product of its digits is 756, while the sum is 25.

The square root of 2139712 is about 1462.7754441472. The cubic root of 2139712 is about 128.8600930958.

The spelling of 2139712 in words is "two million, one hundred thirty-nine thousand, seven hundred twelve".