129773140 has 48 divisors (see below), whose sum is σ = 318713472. Its totient is φ = 43456896.

The previous prime is 129773129. The next prime is 129773141. The reversal of 129773140 is 41377921.

It is a junction number, because it is equal to n+sod(n) for n = 129773096 and 129773105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129773141) 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, 4759 + ... + 16798.

It is an arithmetic number, because the mean of its divisors is an integer number (6639864).

Almost surely, 2^129773140 is an apocalyptic number.

129773140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129773140 is an abundant number, since it is smaller than the sum of its proper divisors (188940332).

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

129773140 is a wasteful number, since it uses less digits than its factorization.

129773140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21616 (or 21614 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 129773140 is about 11391.8014378763. The cubic root of 129773140 is about 506.2848568186.

The spelling of 129773140 in words is "one hundred twenty-nine million, seven hundred seventy-three thousand, one hundred forty".