142145420 has 12 divisors (see below), whose sum is σ = 298505424. Its totient is φ = 56858160.

The previous prime is 142145413. The next prime is 142145429. The reversal of 142145420 is 24541241.

142145420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (142145429) 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, 3553616 + ... + 3553655.

It is an arithmetic number, because the mean of its divisors is an integer number (24875452).

Almost surely, 2^142145420 is an apocalyptic number.

142145420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142145420 is an abundant number, since it is smaller than the sum of its proper divisors (156360004).

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

142145420 is a wasteful number, since it uses less digits than its factorization.

142145420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7107280 (or 7107278 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 142145420 is about 11922.4754141076. The cubic root of 142145420 is about 521.8883756955. Note that the first 3 decimals are identical.

Adding to 142145420 its reverse (24541241), we get a palindrome (166686661).

The spelling of 142145420 in words is "one hundred forty-two million, one hundred forty-five thousand, four hundred twenty".