642240293330 has 8 divisors (see below), whose sum is σ = 1156032528012. Its totient is φ = 256896117328.

The previous prime is 642240293323. The next prime is 642240293341. The reversal of 642240293330 is 33392042246.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 641621826169 + 618467161 = 801013^2 + 24869^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32112014657 + ... + 32112014676.

Almost surely, 2^642240293330 is an apocalyptic number.

642240293330 is a deficient number, since it is larger than the sum of its proper divisors (513792234682).

642240293330 is a wasteful number, since it uses less digits than its factorization.

642240293330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64224029340.

The product of its (nonzero) digits is 186624, while the sum is 38.

The spelling of 642240293330 in words is "six hundred forty-two billion, two hundred forty million, two hundred ninety-three thousand, three hundred thirty".