142731316 has 108 divisors (see below), whose sum is σ = 327116160. Its totient is φ = 54250560.

The previous prime is 142731313. The next prime is 142731331. The reversal of 142731316 is 613137241.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142731313) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1026775 + ... + 1026913.

Almost surely, 2^142731316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142731316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163558080).

142731316 is an abundant number, since it is smaller than the sum of its proper divisors (184384844).

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

142731316 is a wasteful number, since it uses less digits than its factorization.

142731316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 192 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 142731316 is about 11947.0212186972. The cubic root of 142731316 is about 522.6044338460.

Adding to 142731316 its reverse (613137241), we get a palindrome (755868557).

The spelling of 142731316 in words is "one hundred forty-two million, seven hundred thirty-one thousand, three hundred sixteen".