2142515 has 4 divisors (see below), whose sum is σ = 2571024. Its totient is φ = 1714008.

The previous prime is 2142499. The next prime is 2142521. The reversal of 2142515 is 5152412.

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 2142515 - 2⁴ = 2142499 is a prime.

It is a Duffinian number.

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, 214247 + ... + 214256.

It is an arithmetic number, because the mean of its divisors is an integer number (642756).

2^2142515 is an apocalyptic number.

2142515 is a deficient number, since it is larger than the sum of its proper divisors (428509).

2142515 is an equidigital number, since it uses as much as digits as its factorization.

2142515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428508.

The product of its digits is 400, while the sum is 20.

The square root of 2142515 is about 1463.7332407239. The cubic root of 2142515 is about 128.9163369946.

Adding to 2142515 its reverse (5152412), we get a palindrome (7294927).

The spelling of 2142515 in words is "two million, one hundred forty-two thousand, five hundred fifteen".