642200352 has 24 divisors (see below), whose sum is σ = 1685776176. Its totient is φ = 214066752.

The previous prime is 642200333. The next prime is 642200407. The reversal of 642200352 is 253002246.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3344698 + ... + 3344889.

It is an arithmetic number, because the mean of its divisors is an integer number (70240674).

Almost surely, 2^642200352 is an apocalyptic number.

It is an amenable number.

642200352 is an abundant number, since it is smaller than the sum of its proper divisors (1043575824).

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

642200352 is a wasteful number, since it uses less digits than its factorization.

642200352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6689600 (or 6689592 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 642200352 is about 25341.6722415866. The cubic root of 642200352 is about 862.7603535801.

Adding to 642200352 its reverse (253002246), we get a palindrome (895202598).

The spelling of 642200352 in words is "six hundred forty-two million, two hundred thousand, three hundred fifty-two".