642003334 has 64 divisors (see below), whose sum is σ = 1214300160. Its totient is φ = 248209920.

The previous prime is 642003319. The next prime is 642003337. The reversal of 642003334 is 433300246.

It is a junction number, because it is equal to n+sod(n) for n = 642003299 and 642003308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642003337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1318039 + ... + 1318525.

It is an arithmetic number, because the mean of its divisors is an integer number (18973440).

Almost surely, 2^642003334 is an apocalyptic number.

642003334 is a deficient number, since it is larger than the sum of its proper divisors (572296826).

642003334 is a wasteful number, since it uses less digits than its factorization.

642003334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733.

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 642003334 is about 25337.7847097966. The cubic root of 642003334 is about 862.6721169915.

The spelling of 642003334 in words is "six hundred forty-two million, three thousand, three hundred thirty-four".