42672787231 has 4 divisors (see below), whose sum is σ = 42674081472. Its totient is φ = 42671492992.

The previous prime is 42672787219. The next prime is 42672787247. The reversal of 42672787231 is 13278727624.

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-42672787231 is a prime.

It is a super-2 number, since 2×42672787231² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42652787231) 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, 596335 + ... + 664048.

It is an arithmetic number, because the mean of its divisors is an integer number (10668520368).

Almost surely, 2^42672787231 is an apocalyptic number.

42672787231 is a deficient number, since it is larger than the sum of its proper divisors (1294241).

42672787231 is a wasteful number, since it uses less digits than its factorization.

42672787231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294240.

The product of its digits is 1580544, while the sum is 49.

The spelling of 42672787231 in words is "forty-two billion, six hundred seventy-two million, seven hundred eighty-seven thousand, two hundred thirty-one".