2142511 has 8 divisors (see below), whose sum is σ = 2458400. Its totient is φ = 1829088.

The previous prime is 2142499. The next prime is 2142521. The reversal of 2142511 is 1152412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2142511 - 2¹⁵ = 2109743 is a prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2005 + ... + 2881.

It is an arithmetic number, because the mean of its divisors is an integer number (307300).

2^2142511 is an apocalyptic number.

2142511 is a deficient number, since it is larger than the sum of its proper divisors (315889).

2142511 is an equidigital number, since it uses as much as digits as its factorization.

2142511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233.

The product of its digits is 80, while the sum is 16.

The square root of 2142511 is about 1463.7318743540. The cubic root of 2142511 is about 128.9162567671.

Adding to 2142511 its reverse (1152412), we get a palindrome (3294923).

Subtracting from 2142511 its reverse (1152412), we obtain a palindrome (990099).

The spelling of 2142511 in words is "two million, one hundred forty-two thousand, five hundred eleven".