142273140 has 96 divisors (see below), whose sum is σ = 430792320. Its totient is φ = 34960896.

The previous prime is 142273139. The next prime is 142273151. The reversal of 142273140 is 41372241.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 142273140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40494 + ... + 43866.

It is an arithmetic number, because the mean of its divisors is an integer number (4487420).

Almost surely, 2^142273140 is an apocalyptic number.

142273140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142273140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215396160).

142273140 is an abundant number, since it is smaller than the sum of its proper divisors (288519180).

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

142273140 is a wasteful number, since it uses less digits than its factorization.

142273140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441 (or 3439 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 142273140 is about 11927.8304816928. The cubic root of 142273140 is about 522.0446373361.

The spelling of 142273140 in words is "one hundred forty-two million, two hundred seventy-three thousand, one hundred forty".