642112683 has 4 divisors (see below), whose sum is σ = 856150248. Its totient is φ = 428075120.

The previous prime is 642112673. The next prime is 642112697. The reversal of 642112683 is 386211246.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 642112683 - 2¹² = 642108587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642112663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107018778 + ... + 107018783.

It is an arithmetic number, because the mean of its divisors is an integer number (214037562).

Almost surely, 2^642112683 is an apocalyptic number.

642112683 is a deficient number, since it is larger than the sum of its proper divisors (214037565).

642112683 is a wasteful number, since it uses less digits than its factorization.

642112683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214037564.

The product of its digits is 13824, while the sum is 33.

The square root of 642112683 is about 25339.9424427128. The cubic root of 642112683 is about 862.7210923229.

The spelling of 642112683 in words is "six hundred forty-two million, one hundred twelve thousand, six hundred eighty-three".