142229736 has 128 divisors (see below), whose sum is σ = 445132800. Its totient is φ = 41688000.

The previous prime is 142229729. The next prime is 142229741. The reversal of 142229736 is 637922241.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 142229736.

It is a congruent number.

It is an unprimeable number.

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, 72691 + ... + 74621.

It is an arithmetic number, because the mean of its divisors is an integer number (3477600).

Almost surely, 2^142229736 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 142229736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222566400).

142229736 is an abundant number, since it is smaller than the sum of its proper divisors (302903064).

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

142229736 is a wasteful number, since it uses less digits than its factorization.

142229736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988 (or 1978 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 142229736 is about 11926.0109005484. The cubic root of 142229736 is about 521.9915443207.

The spelling of 142229736 in words is "one hundred forty-two million, two hundred twenty-nine thousand, seven hundred thirty-six".