2142979 has 6 divisors (see below), whose sum is σ = 2240756. Its totient is φ = 2049300.

The previous prime is 2142971. The next prime is 2143019. The reversal of 2142979 is 9792412.

It is a happy number.

It is not a de Polignac number, because 2142979 - 2³ = 2142971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2142971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1497 + ... + 2554.

2^2142979 is an apocalyptic number.

2142979 is a deficient number, since it is larger than the sum of its proper divisors (97777).

2142979 is an equidigital number, since it uses as much as digits as its factorization.

2142979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4097 (or 4074 counting only the distinct ones).

The product of its digits is 9072, while the sum is 34.

The square root of 2142979 is about 1463.8917309692. The cubic root of 2142979 is about 128.9256427035.

The spelling of 2142979 in words is "two million, one hundred forty-two thousand, nine hundred seventy-nine".