422743787 has 4 divisors (see below), whose sum is σ = 444993480. Its totient is φ = 400494096.

The previous prime is 422743733. The next prime is 422743799. The reversal of 422743787 is 787347224.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422743787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422743687) 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, 11124818 + ... + 11124855.

It is an arithmetic number, because the mean of its divisors is an integer number (111248370).

Almost surely, 2^422743787 is an apocalyptic number.

422743787 is a deficient number, since it is larger than the sum of its proper divisors (22249693).

422743787 is a wasteful number, since it uses less digits than its factorization.

422743787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22249692.

The product of its digits is 526848, while the sum is 44.

The square root of 422743787 is about 20560.7341065440. The cubic root of 422743787 is about 750.5144837354.

The spelling of 422743787 in words is "four hundred twenty-two million, seven hundred forty-three thousand, seven hundred eighty-seven".