142231420 has 24 divisors (see below), whose sum is σ = 298998000. Its totient is φ = 56833152.

The previous prime is 142231417. The next prime is 142231423. The reversal of 142231420 is 24132241.

142231420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (142231417) and next prime (142231423).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142231423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19431 + ... + 25729.

It is an arithmetic number, because the mean of its divisors is an integer number (12458250).

Almost surely, 2^142231420 is an apocalyptic number.

142231420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142231420 is an abundant number, since it is smaller than the sum of its proper divisors (156766580).

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

142231420 is a wasteful number, since it uses less digits than its factorization.

142231420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7437 (or 7435 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 142231420 is about 11926.0815023209. The cubic root of 142231420 is about 521.9936044391.

Adding to 142231420 its reverse (24132241), we get a palindrome (166363661).

The spelling of 142231420 in words is "one hundred forty-two million, two hundred thirty-one thousand, four hundred twenty".