129142752740 has 48 divisors (see below), whose sum is σ = 276562883520. Its totient is φ = 50645063040.

The previous prime is 129142752659. The next prime is 129142752743. The reversal of 129142752740 is 47257241921.

It is a junction number, because it is equal to n+sod(n) for n = 129142752691 and 129142752700.

It is not an unprimeable number, because it can be changed into a prime (129142752743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79475 + ... + 514394.

It is an arithmetic number, because the mean of its divisors is an integer number (5761726740).

Almost surely, 2^129142752740 is an apocalyptic number.

129142752740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129142752740 is an abundant number, since it is smaller than the sum of its proper divisors (147420130780).

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

129142752740 is a wasteful number, since it uses less digits than its factorization.

129142752740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594092 (or 594090 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 129142752740 in words is "one hundred twenty-nine billion, one hundred forty-two million, seven hundred fifty-two thousand, seven hundred forty".