642234367424 has 112 divisors (see below), whose sum is σ = 1406637162336. Its totient is φ = 289043251200.

The previous prime is 642234367403. The next prime is 642234367469. The reversal of 642234367424 is 424763432246.

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 15 ways as a sum of consecutive naturals, for example, 101343584 + ... + 101349920.

It is an arithmetic number, because the mean of its divisors is an integer number (12559260378).

Almost surely, 2^642234367424 is an apocalyptic number.

642234367424 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 642234367424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (703318581168).

642234367424 is an abundant number, since it is smaller than the sum of its proper divisors (764402794912).

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

642234367424 is a wasteful number, since it uses less digits than its factorization.

642234367424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9374 (or 9364 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 47.

The spelling of 642234367424 in words is "six hundred forty-two billion, two hundred thirty-four million, three hundred sixty-seven thousand, four hundred twenty-four".