52142639 has 2 divisors, whose sum is σ = 52142640. Its totient is φ = 52142638.

The previous prime is 52142627. The next prime is 52142647. The reversal of 52142639 is 93624125.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52142639 - 2¹² = 52138543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52142039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26071319 + 26071320.

It is an arithmetic number, because the mean of its divisors is an integer number (26071320).

Almost surely, 2^52142639 is an apocalyptic number.

52142639 is a deficient number, since it is larger than the sum of its proper divisors (1).

52142639 is an equidigital number, since it uses as much as digits as its factorization.

52142639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 52142639 is about 7220.9860130040. The cubic root of 52142639 is about 373.5920872180.

The spelling of 52142639 in words is "fifty-two million, one hundred forty-two thousand, six hundred thirty-nine".