42767231 has 4 divisors (see below), whose sum is σ = 46057032. Its totient is φ = 39477432.

The previous prime is 42767213. The next prime is 42767261. The reversal of 42767231 is 13276724.

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 42767231 - 2⁶ = 42767167 is a prime.

It is a super-2 number, since 2×42767231² = 3658072094814722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42767201) 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, 1644881 + ... + 1644906.

It is an arithmetic number, because the mean of its divisors is an integer number (11514258).

Almost surely, 2^42767231 is an apocalyptic number.

42767231 is a deficient number, since it is larger than the sum of its proper divisors (3289801).

42767231 is a wasteful number, since it uses less digits than its factorization.

42767231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3289800.

The product of its digits is 14112, while the sum is 32.

The square root of 42767231 is about 6539.6659700630. The cubic root of 42767231 is about 349.7065049768.

It can be divided in two parts, 4276723 and 1, that added together give a palindrome (4276724).

The spelling of 42767231 in words is "forty-two million, seven hundred sixty-seven thousand, two hundred thirty-one".