642202246 has 16 divisors (see below), whose sum is σ = 1103093280. Its totient is φ = 274685760.

The previous prime is 642202213. The next prime is 642202247.

642202246 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 (642202247) 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, 37935 + ... + 52186.

It is an arithmetic number, because the mean of its divisors is an integer number (68943330).

Almost surely, 2^642202246 is an apocalyptic number.

642202246 is a deficient number, since it is larger than the sum of its proper divisors (460891034).

642202246 is a wasteful number, since it uses less digits than its factorization.

642202246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90639.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 642202246 is about 25341.7096108372. The cubic root of 642202246 is about 862.7612017404.

It can be divided in two parts, 64220 and 2246, that added together give a palindrome (66466).

The spelling of 642202246 in words is "six hundred forty-two million, two hundred two thousand, two hundred forty-six".