642292848 has 160 divisors (see below), whose sum is σ = 1942732800. Its totient is φ = 202777344.

The previous prime is 642292843. The next prime is 642292867. The reversal of 642292848 is 848292246.

It is a super-2 number, since 2×642292848² = 825080205183902208, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642292843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1261618 + ... + 1262126.

It is an arithmetic number, because the mean of its divisors is an integer number (12142080).

Almost surely, 2^642292848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 642292848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (971366400).

642292848 is an abundant number, since it is smaller than the sum of its proper divisors (1300439952).

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

642292848 is a wasteful number, since it uses less digits than its factorization.

642292848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676 (or 664 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 642292848 is about 25343.4971541025. The cubic root of 642292848 is about 862.8017726639.

The spelling of 642292848 in words is "six hundred forty-two million, two hundred ninety-two thousand, eight hundred forty-eight".