2072139 has 16 divisors (see below), whose sum is σ = 2937600. Its totient is φ = 1296416.

The previous prime is 2072131. The next prime is 2072153. The reversal of 2072139 is 9312702.

It is a cyclic number.

It is not a de Polignac number, because 2072139 - 2³ = 2072131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2072131) 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, 3817 + ... + 4325.

It is an arithmetic number, because the mean of its divisors is an integer number (183600).

2^2072139 is an apocalyptic number.

2072139 is a deficient number, since it is larger than the sum of its proper divisors (865461).

2072139 is a wasteful number, since it uses less digits than its factorization.

2072139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 2072139 is about 1439.4926189460. The cubic root of 2072139 is about 127.4890724968.

It can be divided in two parts, 2072 and 139, that added together give a triangular number (2211 = T₆₆).

The spelling of 2072139 in words is "two million, seventy-two thousand, one hundred thirty-nine".