2142079 has 4 divisors (see below), whose sum is σ = 2254840. Its totient is φ = 2029320.

The previous prime is 2142073. The next prime is 2142083. The reversal of 2142079 is 9702412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2142079 - 2¹⁵ = 2109311 is a prime.

It is a Duffinian number.

2142079 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142073) 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, 56352 + ... + 56389.

It is an arithmetic number, because the mean of its divisors is an integer number (563710).

2^2142079 is an apocalyptic number.

2142079 is a deficient number, since it is larger than the sum of its proper divisors (112761).

2142079 is a wasteful number, since it uses less digits than its factorization.

2142079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112760.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 2142079 is about 1463.5842989046. The cubic root of 2142079 is about 128.9075916126.

The spelling of 2142079 in words is "two million, one hundred forty-two thousand, seventy-nine".