642684001452 has 24 divisors (see below), whose sum is σ = 1499609459376. Its totient is φ = 214226078208.

The previous prime is 642684001451. The next prime is 642684001457. The reversal of 642684001452 is 254100486246.

It is not an unprimeable number, because it can be changed into a prime (642684001451) 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, 1955128 + ... + 2260064.

It is an arithmetic number, because the mean of its divisors is an integer number (62483727474).

Almost surely, 2^642684001452 is an apocalyptic number.

It is an amenable number.

642684001452 is an abundant number, since it is smaller than the sum of its proper divisors (856925457924).

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

642684001452 is a wasteful number, since it uses less digits than its factorization.

642684001452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480577 (or 480575 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 42.

Adding to 642684001452 its reverse (254100486246), we get a palindrome (896784487698).

The spelling of 642684001452 in words is "six hundred forty-two billion, six hundred eighty-four million, one thousand, four hundred fifty-two".