642433006 has 8 divisors (see below), whose sum is σ = 963763200. Its totient is φ = 321178608.

The previous prime is 642433003. The next prime is 642433021. The reversal of 642433006 is 600334246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642433003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13050 + ... + 38146.

It is an arithmetic number, because the mean of its divisors is an integer number (120470400).

Almost surely, 2^642433006 is an apocalyptic number.

642433006 is a deficient number, since it is larger than the sum of its proper divisors (321330194).

642433006 is a wasteful number, since it uses less digits than its factorization.

642433006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37898.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 642433006 is about 25346.2621701899. The cubic root of 642433006 is about 862.8645268921.

The spelling of 642433006 in words is "six hundred forty-two million, four hundred thirty-three thousand, six".