731142 has 24 divisors (see below), whose sum is σ = 1600560. Its totient is φ = 241200.

The previous prime is 731141. The next prime is 731173. The reversal of 731142 is 241137.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 731142.

It is not an unprimeable number, because it can be changed into a prime (731141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2584 + ... + 2852.

It is an arithmetic number, because the mean of its divisors is an integer number (66690).

2⁷³¹¹⁴² is an apocalyptic number.

731142 is an abundant number, since it is smaller than the sum of its proper divisors (869418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

731142 is a wasteful number, since it uses less digits than its factorization.

731142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 425 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 731142 is about 855.0684183152. The cubic root of 731142 is about 90.0880619544.

Adding to 731142 its reverse (241137), we get a palindrome (972279).

The spelling of 731142 in words is "seven hundred thirty-one thousand, one hundred forty-two".