642333545403 has 8 divisors (see below), whose sum is σ = 934303338816. Its totient is φ = 389293057800.

The previous prime is 642333545387. The next prime is 642333545407. The reversal of 642333545403 is 304545333246.

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

It is not a de Polignac number, because 642333545403 - 2⁴ = 642333545387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642333545407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9732326413 + ... + 9732326478.

It is an arithmetic number, because the mean of its divisors is an integer number (116787917352).

Almost surely, 2^642333545403 is an apocalyptic number.

642333545403 is a deficient number, since it is larger than the sum of its proper divisors (291969793413).

642333545403 is a wasteful number, since it uses less digits than its factorization.

642333545403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19464652905.

The product of its (nonzero) digits is 1555200, while the sum is 42.

Adding to 642333545403 its reverse (304545333246), we get a palindrome (946878878649).

The spelling of 642333545403 in words is "six hundred forty-two billion, three hundred thirty-three million, five hundred forty-five thousand, four hundred three".