642542363 has 8 divisors (see below), whose sum is σ = 665398656. Its totient is φ = 619819200.

The previous prime is 642542359. The next prime is 642542371. The reversal of 642542363 is 363245246.

642542363 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 642542363 - 2² = 642542359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642548363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23408 + ... + 42813.

It is an arithmetic number, because the mean of its divisors is an integer number (83174832).

Almost surely, 2^642542363 is an apocalyptic number.

642542363 is a deficient number, since it is larger than the sum of its proper divisors (22856293).

642542363 is a wasteful number, since it uses less digits than its factorization.

642542363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66565.

The product of its digits is 103680, while the sum is 35.

The square root of 642542363 is about 25348.4193392803. The cubic root of 642542363 is about 862.9134839670.

The spelling of 642542363 in words is "six hundred forty-two million, five hundred forty-two thousand, three hundred sixty-three".