642284552 has 48 divisors (see below), whose sum is σ = 1508674860. Its totient is φ = 254088576.

The previous prime is 642284543. The next prime is 642284603. The reversal of 642284552 is 255482246.

It can be written as a sum of positive squares in 2 ways, for example, as 545969956 + 96314596 = 23366^2 + 9814^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57923 + ... + 68114.

Almost surely, 2^642284552 is an apocalyptic number.

It is an amenable number.

642284552 is an abundant number, since it is smaller than the sum of its proper divisors (866390308).

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

642284552 is a wasteful number, since it uses less digits than its factorization.

642284552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126070 (or 126059 counting only the distinct ones).

The product of its digits is 153600, while the sum is 38.

The square root of 642284552 is about 25343.3334823973. Note that the first 3 decimals coincide. The cubic root of 642284552 is about 862.7980579335.

The spelling of 642284552 in words is "six hundred forty-two million, two hundred eighty-four thousand, five hundred fifty-two".