642244035 has 8 divisors (see below), whose sum is σ = 1027590480. Its totient is φ = 342530144.

The previous prime is 642244027. The next prime is 642244073. The reversal of 642244035 is 530442246.

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

It is a cyclic number.

It is not a de Polignac number, because 642244035 - 2³ = 642244027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 642243993 and 642244011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21408120 + ... + 21408149.

It is an arithmetic number, because the mean of its divisors is an integer number (128448810).

Almost surely, 2^642244035 is an apocalyptic number.

642244035 is a deficient number, since it is larger than the sum of its proper divisors (385346445).

642244035 is a wasteful number, since it uses less digits than its factorization.

642244035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42816277.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 642244035 is about 25342.5341077012. The cubic root of 642244035 is about 862.7799150279.

The spelling of 642244035 in words is "six hundred forty-two million, two hundred forty-four thousand, thirty-five".