142256730 has 64 divisors (see below), whose sum is σ = 425668608. Its totient is φ = 29559360.

The previous prime is 142256713. The next prime is 142256747. The reversal of 142256730 is 37652241.

142256730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (142256713) and next prime (142256747).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 28482 + ... + 33101.

It is an arithmetic number, because the mean of its divisors is an integer number (6651072).

Almost surely, 2^142256730 is an apocalyptic number.

142256730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142256730 is an abundant number, since it is smaller than the sum of its proper divisors (283411878).

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

142256730 is a wasteful number, since it uses less digits than its factorization.

142256730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61611.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 142256730 is about 11927.1425748165. The cubic root of 142256730 is about 522.0245654240.

The spelling of 142256730 in words is "one hundred forty-two million, two hundred fifty-six thousand, seven hundred thirty".