642351010 has 16 divisors (see below), whose sum is σ = 1321407936. Its totient is φ = 220234608.

The previous prime is 642351007. The next prime is 642351013. The reversal of 642351010 is 10153246.

It is an interprime number because it is at equal distance from previous prime (642351007) and next prime (642351013).

It is a super-2 number, since 2×642351010² = 825229640096040200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (642351013) 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, 4588152 + ... + 4588291.

It is an arithmetic number, because the mean of its divisors is an integer number (82587996).

Almost surely, 2^642351010 is an apocalyptic number.

642351010 is an abundant number, since it is smaller than the sum of its proper divisors (679056926).

642351010 is a wasteful number, since it uses less digits than its factorization.

642351010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9176457.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 642351010 is about 25344.6446019667. The cubic root of 642351010 is about 862.8278151782.

The spelling of 642351010 in words is "six hundred forty-two million, three hundred fifty-one thousand, ten".