642303246 has 64 divisors (see below), whose sum is σ = 1461600000. Its totient is φ = 186541056.

The previous prime is 642303241. The next prime is 642303247.

It is a happy number.

642303246 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642303241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 513630 + ... + 514878.

It is an arithmetic number, because the mean of its divisors is an integer number (22837500).

Almost surely, 2^642303246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 642303246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (730800000).

642303246 is an abundant number, since it is smaller than the sum of its proper divisors (819296754).

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

642303246 is a wasteful number, since it uses less digits than its factorization.

642303246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633.

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 642303246 is about 25343.7022946530. The cubic root of 642303246 is about 862.8064285694.

It can be divided in two parts, 64230 and 3246, that added together give a palindrome (67476).

The spelling of 642303246 in words is "six hundred forty-two million, three hundred three thousand, two hundred forty-six".