642333970 has 16 divisors (see below), whose sum is σ = 1156949568. Its totient is φ = 256767280.

The previous prime is 642333961. The next prime is 642333971. The reversal of 642333970 is 79333246.

It is not an unprimeable number, because it can be changed into a prime (642333971) 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, 3916 + ... + 36055.

It is an arithmetic number, because the mean of its divisors is an integer number (72309348).

Almost surely, 2^642333970 is an apocalyptic number.

642333970 is a deficient number, since it is larger than the sum of its proper divisors (514615598).

642333970 is a wasteful number, since it uses less digits than its factorization.

642333970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41585.

The product of its (nonzero) digits is 81648, while the sum is 37.

The square root of 642333970 is about 25344.3084340449. The cubic root of 642333970 is about 862.8201855408.

The spelling of 642333970 in words is "six hundred forty-two million, three hundred thirty-three thousand, nine hundred seventy".