142421232 has 20 divisors (see below), whose sum is σ = 367921640. Its totient is φ = 47473728.

The previous prime is 142421183. The next prime is 142421239. The reversal of 142421232 is 232124241.

142421232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 142421199 and 142421208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142421239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1483507 + ... + 1483602.

It is an arithmetic number, because the mean of its divisors is an integer number (18396082).

Almost surely, 2^142421232 is an apocalyptic number.

142421232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

142421232 is an abundant number, since it is smaller than the sum of its proper divisors (225500408).

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

142421232 is a wasteful number, since it uses less digits than its factorization.

142421232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2967120 (or 2967114 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 142421232 is about 11934.0367018038. The cubic root of 142421232 is about 522.2257064771.

Adding to 142421232 its reverse (232124241), we get a palindrome (374545473).

The spelling of 142421232 in words is "one hundred forty-two million, four hundred twenty-one thousand, two hundred thirty-two".