142273788 has 24 divisors (see below), whose sum is σ = 336521808. Its totient is φ = 46774656.

The previous prime is 142273759. The next prime is 142273793. The reversal of 142273788 is 887372241.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80331 + ... + 82082.

It is an arithmetic number, because the mean of its divisors is an integer number (14021742).

Almost surely, 2^142273788 is an apocalyptic number.

It is an amenable number.

142273788 is an abundant number, since it is smaller than the sum of its proper divisors (194248020).

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

142273788 is a wasteful number, since it uses less digits than its factorization.

142273788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162493 (or 162491 counting only the distinct ones).

The product of its digits is 150528, while the sum is 42.

The square root of 142273788 is about 11927.8576450258. The cubic root of 142273788 is about 522.0454299064.

The spelling of 142273788 in words is "one hundred forty-two million, two hundred seventy-three thousand, seven hundred eighty-eight".