642929230 has 16 divisors (see below), whose sum is σ = 1157879520. Its totient is φ = 257036832.

The previous prime is 642929227. The next prime is 642929237. The reversal of 642929230 is 32929246.

It is a self number, because there is not a number n which added to its sum of digits gives 642929230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642929237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4447 + ... + 36133.

It is an arithmetic number, because the mean of its divisors is an integer number (72367470).

Almost surely, 2^642929230 is an apocalyptic number.

642929230 is a deficient number, since it is larger than the sum of its proper divisors (514950290).

642929230 is a wasteful number, since it uses less digits than its factorization.

642929230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33723.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 642929230 is about 25356.0491796336. The cubic root of 642929230 is about 863.0866324853.

The spelling of 642929230 in words is "six hundred forty-two million, nine hundred twenty-nine thousand, two hundred thirty".