2142499 has 2 divisors, whose sum is σ = 2142500. Its totient is φ = 2142498.

The previous prime is 2142463. The next prime is 2142521. The reversal of 2142499 is 9942412.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2142499 - 2⁹ = 2141987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2142499.

It is not a weakly prime, because it can be changed into another prime (2142449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071249 + 1071250.

It is an arithmetic number, because the mean of its divisors is an integer number (1071250).

2^2142499 is an apocalyptic number.

2142499 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142499 is an equidigital number, since it uses as much as digits as its factorization.

2142499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 2142499 is about 1463.7277752369. The cubic root of 2142499 is about 128.9160160841.

The spelling of 2142499 in words is "two million, one hundred forty-two thousand, four hundred ninety-nine".