142180728 has 32 divisors (see below), whose sum is σ = 355829760. Its totient is φ = 47343200.

The previous prime is 142180723. The next prime is 142180729. The reversal of 142180728 is 827081241.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142180721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25051 + ... + 30197.

It is an arithmetic number, because the mean of its divisors is an integer number (11119680).

Almost surely, 2^142180728 is an apocalyptic number.

It is an amenable number.

142180728 is an abundant number, since it is smaller than the sum of its proper divisors (213649032).

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

142180728 is a wasteful number, since it uses less digits than its factorization.

142180728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6307 (or 6303 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 142180728 is about 11923.9560549341. The cubic root of 142180728 is about 521.9315833469.

The spelling of 142180728 in words is "one hundred forty-two million, one hundred eighty thousand, seven hundred twenty-eight".