142631790 has 64 divisors (see below), whose sum is σ = 392394240. Its totient is φ = 32503680.

The previous prime is 142631779. The next prime is 142631791. The reversal of 142631790 is 97136241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142631791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87180 + ... + 88800.

It is an arithmetic number, because the mean of its divisors is an integer number (6131160).

Almost surely, 2^142631790 is an apocalyptic number.

142631790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142631790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196197120).

142631790 is an abundant number, since it is smaller than the sum of its proper divisors (249762450).

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

142631790 is a wasteful number, since it uses less digits than its factorization.

142631790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 142631790 is about 11942.8551862609. The cubic root of 142631790 is about 522.4829355782.

The spelling of 142631790 in words is "one hundred forty-two million, six hundred thirty-one thousand, seven hundred ninety".