492143687 has 4 divisors (see below), whose sum is σ = 562449936. Its totient is φ = 421837440.

The previous prime is 492143683. The next prime is 492143699. The reversal of 492143687 is 786341294.

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 492143687 - 2² = 492143683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (492143683) 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, 35153114 + ... + 35153127.

It is an arithmetic number, because the mean of its divisors is an integer number (140612484).

Almost surely, 2^492143687 is an apocalyptic number.

492143687 is a deficient number, since it is larger than the sum of its proper divisors (70306249).

492143687 is an equidigital number, since it uses as much as digits as its factorization.

492143687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70306248.

The product of its digits is 290304, while the sum is 44.

The square root of 492143687 is about 22184.3117314917. The cubic root of 492143687 is about 789.5215214002.

The spelling of 492143687 in words is "four hundred ninety-two million, one hundred forty-three thousand, six hundred eighty-seven".