142129660 has 24 divisors (see below), whose sum is σ = 298821600. Its totient is φ = 56785344.

The previous prime is 142129649. The next prime is 142129661. The reversal of 142129660 is 66921241.

142129660 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142129661) 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, 15666 + ... + 23014.

It is an arithmetic number, because the mean of its divisors is an integer number (12450900).

Almost surely, 2^142129660 is an apocalyptic number.

142129660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142129660 is an abundant number, since it is smaller than the sum of its proper divisors (156691940).

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

142129660 is a wasteful number, since it uses less digits than its factorization.

142129660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8325 (or 8323 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 142129660 is about 11921.8144592172. The cubic root of 142129660 is about 521.8690873151.

The spelling of 142129660 in words is "one hundred forty-two million, one hundred twenty-nine thousand, six hundred sixty".