422742687 has 4 divisors (see below), whose sum is σ = 563656920. Its totient is φ = 281828456.

The previous prime is 422742673. The next prime is 422742701. The reversal of 422742687 is 786247224.

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

It is an interprime number because it is at equal distance from previous prime (422742673) and next prime (422742701).

It is a cyclic number.

It is not a de Polignac number, because 422742687 - 2⁶ = 422742623 is a prime.

It is a super-2 number, since 2×422742687² = 357422758823959938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422742637) 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, 70457112 + ... + 70457117.

It is an arithmetic number, because the mean of its divisors is an integer number (140914230).

Almost surely, 2^422742687 is an apocalyptic number.

422742687 is a deficient number, since it is larger than the sum of its proper divisors (140914233).

422742687 is a wasteful number, since it uses less digits than its factorization.

422742687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140914232.

The product of its digits is 301056, while the sum is 42.

The square root of 422742687 is about 20560.7073565089. The cubic root of 422742687 is about 750.5138327763.

The spelling of 422742687 in words is "four hundred twenty-two million, seven hundred forty-two thousand, six hundred eighty-seven".