142274320 has 40 divisors (see below), whose sum is σ = 345174336. Its totient is φ = 54434688.

The previous prime is 142274317. The next prime is 142274333. The reversal of 142274320 is 23472241.

It is a happy number.

142274320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36822 + ... + 40501.

Almost surely, 2^142274320 is an apocalyptic number.

142274320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142274320 is an abundant number, since it is smaller than the sum of its proper divisors (202900016).

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

142274320 is a wasteful number, since it uses less digits than its factorization.

142274320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77359 (or 77353 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 142274320 is about 11927.8799457406. The cubic root of 142274320 is about 522.0460805951.

The spelling of 142274320 in words is "one hundred forty-two million, two hundred seventy-four thousand, three hundred twenty".