642303252402 has 32 divisors (see below), whose sum is σ = 1468399076352. Its totient is φ = 183480545424.

The previous prime is 642303252347. The next prime is 642303252407. The reversal of 642303252402 is 204252303246.

It is a super-3 number, since 3×642303252402³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (642303252407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1219188 + ... + 1664639.

It is an arithmetic number, because the mean of its divisors is an integer number (45887471136).

Almost surely, 2^642303252402 is an apocalyptic number.

642303252402 is an abundant number, since it is smaller than the sum of its proper divisors (826095823950).

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

642303252402 is a wasteful number, since it uses less digits than its factorization.

642303252402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2889142.

The product of its (nonzero) digits is 69120, while the sum is 33.

Adding to 642303252402 its reverse (204252303246), we get a palindrome (846555555648).

The spelling of 642303252402 in words is "six hundred forty-two billion, three hundred three million, two hundred fifty-two thousand, four hundred two".