54639742 has 8 divisors (see below), whose sum is σ = 82279296. Its totient is φ = 27213312.

The previous prime is 54639733. The next prime is 54639769. The reversal of 54639742 is 24793645.

It is a happy number.

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 = 54639695 and 54639704.

It is a congruent number.

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, 52638 + ... + 53665.

It is an arithmetic number, because the mean of its divisors is an integer number (10284912).

Almost surely, 2^54639742 is an apocalyptic number.

54639742 is a deficient number, since it is larger than the sum of its proper divisors (27639554).

54639742 is a wasteful number, since it uses less digits than its factorization.

54639742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106562.

The product of its digits is 181440, while the sum is 40.

The square root of 54639742 is about 7391.8699934455. The cubic root of 54639742 is about 379.4630967974.

The spelling of 54639742 in words is "fifty-four million, six hundred thirty-nine thousand, seven hundred forty-two".