142272456 has 64 divisors (see below), whose sum is σ = 396446400. Its totient is φ = 42283008.

The previous prime is 142272451. The next prime is 142272467. The reversal of 142272456 is 654272241.

It is not an unprimeable number, because it can be changed into a prime (142272451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1425 + ... + 16928.

It is an arithmetic number, because the mean of its divisors is an integer number (6194475).

Almost surely, 2^142272456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142272456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198223200).

142272456 is an abundant number, since it is smaller than the sum of its proper divisors (254173944).

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

142272456 is a wasteful number, since it uses less digits than its factorization.

142272456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18398 (or 18394 counting only the distinct ones).

The product of its digits is 26880, while the sum is 33.

The square root of 142272456 is about 11927.8018092187. The cubic root of 142272456 is about 522.0438007315.

The spelling of 142272456 in words is "one hundred forty-two million, two hundred seventy-two thousand, four hundred fifty-six".