642211010 has 32 divisors (see below), whose sum is σ = 1327076352. Its totient is φ = 219193920.

The previous prime is 642211007. The next prime is 642211019. The reversal of 642211010 is 10112246.

It is a self number, because there is not a number n which added to its sum of digits gives 642211010.

It is not an unprimeable number, because it can be changed into a prime (642211019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4961 + ... + 36180.

It is an arithmetic number, because the mean of its divisors is an integer number (41471136).

Almost surely, 2^642211010 is an apocalyptic number.

642211010 is an abundant number, since it is smaller than the sum of its proper divisors (684865342).

642211010 is a wasteful number, since it uses less digits than its factorization.

642211010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41378.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 642211010 is about 25341.8825267580. The cubic root of 642211010 is about 862.7651263632.

Adding to 642211010 its reverse (10112246), we get a palindrome (652323256).

The spelling of 642211010 in words is "six hundred forty-two million, two hundred eleven thousand, ten".