642084045 has 8 divisors (see below), whose sum is σ = 1027334496. Its totient is φ = 342444816.

The previous prime is 642084019. The next prime is 642084071. The reversal of 642084045 is 540480246.

642084045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (642084019) and next prime (642084071).

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

It is not a de Polignac number, because 642084045 - 2¹¹ = 642081997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 642083997 and 642084015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21402787 + ... + 21402816.

It is an arithmetic number, because the mean of its divisors is an integer number (128416812).

Almost surely, 2^642084045 is an apocalyptic number.

It is an amenable number.

642084045 is a deficient number, since it is larger than the sum of its proper divisors (385250451).

642084045 is a wasteful number, since it uses less digits than its factorization.

642084045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42805611.

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 642084045 is about 25339.3773601484. The cubic root of 642084045 is about 862.7082664464.

The spelling of 642084045 in words is "six hundred forty-two million, eighty-four thousand, forty-five".