2142697237 has 2 divisors, whose sum is σ = 2142697238. Its totient is φ = 2142697236.

The previous prime is 2142697231. The next prime is 2142697259. The reversal of 2142697237 is 7327962412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1124193841 + 1018503396 = 33529^2 + 31914^2 .

It is a cyclic number.

It is not a de Polignac number, because 2142697237 - 2²⁷ = 2008479509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2142697193 and 2142697202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2142697231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071348618 + 1071348619.

It is an arithmetic number, because the mean of its divisors is an integer number (1071348619).

Almost surely, 2^2142697237 is an apocalyptic number.

It is an amenable number.

2142697237 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142697237 is an equidigital number, since it uses as much as digits as its factorization.

2142697237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 43.

The square root of 2142697237 is about 46289.2777757441. The cubic root of 2142697237 is about 1289.1999199199.

The spelling of 2142697237 in words is "two billion, one hundred forty-two million, six hundred ninety-seven thousand, two hundred thirty-seven".