52639742 has 8 divisors (see below), whose sum is σ = 79033656. Its totient is φ = 26295192.

The previous prime is 52639733. The next prime is 52639751. The reversal of 52639742 is 24793625.

It is an interprime number because it is at equal distance from previous prime (52639733) and next prime (52639751).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 52639696 and 52639705.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9548 + ... + 14015.

It is an arithmetic number, because the mean of its divisors is an integer number (9879207).

Almost surely, 2^52639742 is an apocalyptic number.

52639742 is a deficient number, since it is larger than the sum of its proper divisors (26393914).

52639742 is a wasteful number, since it uses less digits than its factorization.

52639742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24682.

The product of its digits is 90720, while the sum is 38.

The square root of 52639742 is about 7255.3250788645. The cubic root of 52639742 is about 374.7755504272.

The spelling of 52639742 in words is "fifty-two million, six hundred thirty-nine thousand, seven hundred forty-two".