63642542 has 4 divisors (see below), whose sum is σ = 95463816. Its totient is φ = 31821270.

The previous prime is 63642529. The next prime is 63642569. The reversal of 63642542 is 24524636.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 63642499 and 63642508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15910634 + ... + 15910637.

It is an arithmetic number, because the mean of its divisors is an integer number (23865954).

Almost surely, 2^63642542 is an apocalyptic number.

63642542 is a deficient number, since it is larger than the sum of its proper divisors (31821274).

63642542 is a wasteful number, since it uses less digits than its factorization.

63642542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31821273.

The product of its digits is 34560, while the sum is 32.

The square root of 63642542 is about 7977.6275922106. The cubic root of 63642542 is about 399.2539050544.

The spelling of 63642542 in words is "sixty-three million, six hundred forty-two thousand, five hundred forty-two".