142224460 has 72 divisors (see below), whose sum is σ = 351056160. Its totient is φ = 48254976.

The previous prime is 142224457. The next prime is 142224461. The reversal of 142224460 is 64422241.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (142224461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100236 + ... + 101644.

It is an arithmetic number, because the mean of its divisors is an integer number (4875780).

Almost surely, 2^142224460 is an apocalyptic number.

142224460 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 142224460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175528080).

142224460 is an abundant number, since it is smaller than the sum of its proper divisors (208831700).

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

142224460 is a wasteful number, since it uses less digits than its factorization.

142224460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535 (or 1526 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 142224460 is about 11925.7897013154. The cubic root of 142224460 is about 521.9850898302.

The spelling of 142224460 in words is "one hundred forty-two million, two hundred twenty-four thousand, four hundred sixty".