2642039 has 2 divisors, whose sum is σ = 2642040. Its totient is φ = 2642038.

The previous prime is 2641993. The next prime is 2642041. The reversal of 2642039 is 9302462.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2642039 is a prime.

It is a Sophie Germain prime.

Together with 2642041, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2641999 and 2642017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2642239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321019 + 1321020.

It is an arithmetic number, because the mean of its divisors is an integer number (1321020).

2^2642039 is an apocalyptic number.

2642039 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642039 is an equidigital number, since it uses as much as digits as its factorization.

2642039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 2642039 is about 1625.4350186950. The cubic root of 2642039 is about 138.2440371431.

The spelling of 2642039 in words is "two million, six hundred forty-two thousand, thirty-nine".