142220432 has 20 divisors (see below), whose sum is σ = 275742396. Its totient is φ = 71061120.

The previous prime is 142220413. The next prime is 142220447. The reversal of 142220432 is 234022241.

It can be written as a sum of positive squares in 2 ways, for example, as 36048016 + 106172416 = 6004^2 + 10304^2 .

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 3 ways as a sum of consecutive naturals, for example, 35558 + ... + 39354.

Almost surely, 2^142220432 is an apocalyptic number.

It is an amenable number.

142220432 is a deficient number, since it is larger than the sum of its proper divisors (133521964).

142220432 is a wasteful number, since it uses less digits than its factorization.

142220432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6146 (or 6140 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 142220432 is about 11925.6208224142. The cubic root of 142220432 is about 521.9801619957.

Adding to 142220432 its reverse (234022241), we get a palindrome (376242673).

The spelling of 142220432 in words is "one hundred forty-two million, two hundred twenty thousand, four hundred thirty-two".