42206043623 has 4 divisors (see below), whose sum is σ = 44427414360. Its totient is φ = 39984672888.

The previous prime is 42206043619. The next prime is 42206043631. The reversal of 42206043623 is 32634060224.

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 42206043623 - 2² = 42206043619 is a prime.

It is a super-2 number, since 2×42206043623² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42206043623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42206043683) 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, 1110685340 + ... + 1110685377.

It is an arithmetic number, because the mean of its divisors is an integer number (11106853590).

Almost surely, 2^42206043623 is an apocalyptic number.

42206043623 is a deficient number, since it is larger than the sum of its proper divisors (2221370737).

42206043623 is a wasteful number, since it uses less digits than its factorization.

42206043623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221370736.

The product of its (nonzero) digits is 41472, while the sum is 32.

The spelling of 42206043623 in words is "forty-two billion, two hundred six million, forty-three thousand, six hundred twenty-three".