142273920 has 64 divisors (see below), whose sum is σ = 453504240. Its totient is φ = 37939200.

The previous prime is 142273907. The next prime is 142273921. The reversal of 142273920 is 29372241.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142273921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35131 + ... + 38970.

Almost surely, 2^142273920 is an apocalyptic number.

142273920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142273920 is an abundant number, since it is smaller than the sum of its proper divisors (311230320).

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

142273920 is an equidigital number, since it uses as much as digits as its factorization.

142273920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74123 (or 74111 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 142273920 is about 11927.8631782897. The cubic root of 142273920 is about 522.0455913557.

The spelling of 142273920 in words is "one hundred forty-two million, two hundred seventy-three thousand, nine hundred twenty".