142631740 has 48 divisors (see below), whose sum is σ = 314798400. Its totient is φ = 54179840.

The previous prime is 142631737. The next prime is 142631747. The reversal of 142631740 is 47136241.

142631740 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 142631699 and 142631708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142631747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67500 + ... + 69580.

It is an arithmetic number, because the mean of its divisors is an integer number (6558300).

Almost surely, 2^142631740 is an apocalyptic number.

142631740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142631740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157399200).

142631740 is an abundant number, since it is smaller than the sum of its proper divisors (172166660).

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

142631740 is a wasteful number, since it uses less digits than its factorization.

142631740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262 (or 2260 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 142631740 is about 11942.8530929590. The cubic root of 142631740 is about 522.4828745255.

Adding to 142631740 its reverse (47136241), we get a palindrome (189767981).

The spelling of 142631740 in words is "one hundred forty-two million, six hundred thirty-one thousand, seven hundred forty".