642241662 has 16 divisors (see below), whose sum is σ = 1284744720. Its totient is φ = 214036992.

The previous prime is 642241637. The next prime is 642241681. The reversal of 642241662 is 266142246.

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 7 ways as a sum of consecutive naturals, for example, 37788 + ... + 52080.

It is an arithmetic number, because the mean of its divisors is an integer number (80296545).

Almost surely, 2^642241662 is an apocalyptic number.

642241662 is an abundant number, since it is smaller than the sum of its proper divisors (642503058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642241662 is a wasteful number, since it uses less digits than its factorization.

642241662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21787.

The product of its digits is 27648, while the sum is 33.

The square root of 642241662 is about 25342.4872891356. The cubic root of 642241662 is about 862.7788524104.

It can be divided in two parts, 6422 and 41662, that added together give a palindrome (48084).

The spelling of 642241662 in words is "six hundred forty-two million, two hundred forty-one thousand, six hundred sixty-two".