53139842 has 8 divisors (see below), whose sum is σ = 91096896. Its totient is φ = 22774212.

The previous prime is 53139833. The next prime is 53139851. The reversal of 53139842 is 24893135.

It is an interprime number because it is at equal distance from previous prime (53139833) and next prime (53139851).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1897838 + ... + 1897865.

It is an arithmetic number, because the mean of its divisors is an integer number (11387112).

Almost surely, 2^53139842 is an apocalyptic number.

53139842 is a deficient number, since it is larger than the sum of its proper divisors (37957054).

53139842 is a wasteful number, since it uses less digits than its factorization.

53139842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3795712.

The product of its digits is 25920, while the sum is 35.

The square root of 53139842 is about 7289.7079502542. The cubic root of 53139842 is about 375.9586541605.

The spelling of 53139842 in words is "fifty-three million, one hundred thirty-nine thousand, eight hundred forty-two".