2142637 has 4 divisors (see below), whose sum is σ = 2448736. Its totient is φ = 1836540.

The previous prime is 2142601. The next prime is 2142641. The reversal of 2142637 is 7362412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2142637 - 2¹⁵ = 2109869 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 (2142667) 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, 153039 + ... + 153052.

It is an arithmetic number, because the mean of its divisors is an integer number (612184).

2^2142637 is an apocalyptic number.

It is an amenable number.

2142637 is a deficient number, since it is larger than the sum of its proper divisors (306099).

2142637 is an equidigital number, since it uses as much as digits as its factorization.

2142637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306098.

The product of its digits is 2016, while the sum is 25.

The square root of 2142637 is about 1463.7749143909. The cubic root of 2142637 is about 128.9187838844.

The spelling of 2142637 in words is "two million, one hundred forty-two thousand, six hundred thirty-seven".