142272720 has 80 divisors (see below), whose sum is σ = 490057920. Its totient is φ = 37938816.

The previous prime is 142272709. The next prime is 142272749. The reversal of 142272720 is 27272241.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 30774 + ... + 35093.

It is an arithmetic number, because the mean of its divisors is an integer number (6125724).

Almost surely, 2^142272720 is an apocalyptic number.

142272720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142272720 is an abundant number, since it is smaller than the sum of its proper divisors (347785200).

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

142272720 is a wasteful number, since it uses less digits than its factorization.

142272720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65889 (or 65877 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 142272720 is about 11927.8128757958. The cubic root of 142272720 is about 522.0441236318.

The spelling of 142272720 in words is "one hundred forty-two million, two hundred seventy-two thousand, seven hundred twenty".