142721460 has 192 divisors, whose sum is σ = 537546240. Its totient is φ = 30689280.

The previous prime is 142721399. The next prime is 142721471. The reversal of 142721460 is 64127241.

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 polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 63150 + ... + 65370.

It is an arithmetic number, because the mean of its divisors is an integer number (2799720).

Almost surely, 2^142721460 is an apocalyptic number.

142721460 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 142721460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268773120).

142721460 is an abundant number, since it is smaller than the sum of its proper divisors (394824780).

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

142721460 is a wasteful number, since it uses less digits than its factorization.

142721460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263 (or 2255 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 142721460 is about 11946.6087238178. The cubic root of 142721460 is about 522.5924044657.

The spelling of 142721460 in words is "one hundred forty-two million, seven hundred twenty-one thousand, four hundred sixty".