642220062 has 16 divisors (see below), whose sum is σ = 1401207552. Its totient is φ = 194612120.

The previous prime is 642220057. The next prime is 642220081. The reversal of 642220062 is 260022246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4865238 + ... + 4865369.

It is an arithmetic number, because the mean of its divisors is an integer number (87575472).

Almost surely, 2^642220062 is an apocalyptic number.

642220062 is an abundant number, since it is smaller than the sum of its proper divisors (758987490).

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

642220062 is a wasteful number, since it uses less digits than its factorization.

642220062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9730623.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 642220062 is about 25342.0611237523. The cubic root of 642220062 is about 862.7691799183.

The spelling of 642220062 in words is "six hundred forty-two million, two hundred twenty thousand, sixty-two".