2142479 has 6 divisors (see below), whose sum is σ = 2175576. Its totient is φ = 2109860.

The previous prime is 2142463. The next prime is 2142499. The reversal of 2142479 is 9742412.

It is not a de Polignac number, because 2142479 - 2⁴ = 2142463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142449) 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, 6734 + ... + 7044.

It is an arithmetic number, because the mean of its divisors is an integer number (362596).

2^2142479 is an apocalyptic number.

2142479 is a deficient number, since it is larger than the sum of its proper divisors (33097).

2142479 is an frugal number, since it uses more digits than its factorization.

2142479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477 (or 394 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 2142479 is about 1463.7209433495. The cubic root of 2142479 is about 128.9156149437.

The spelling of 2142479 in words is "two million, one hundred forty-two thousand, four hundred seventy-nine".