129480540 has 72 divisors (see below), whose sum is σ = 421746192. Its totient is φ = 29594880.

The previous prime is 129480539. The next prime is 129480541. The reversal of 129480540 is 45084921.

It is an interprime number because it is at equal distance from previous prime (129480539) and next prime (129480541).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129480541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19081 + ... + 24960.

It is an arithmetic number, because the mean of its divisors is an integer number (5857586).

Almost surely, 2^129480540 is an apocalyptic number.

129480540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129480540 is an abundant number, since it is smaller than the sum of its proper divisors (292265652).

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

129480540 is a wasteful number, since it uses less digits than its factorization.

129480540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44067 (or 44058 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 129480540 is about 11378.9516213050. The cubic root of 129480540 is about 505.9040630085.

The spelling of 129480540 in words is "one hundred twenty-nine million, four hundred eighty thousand, five hundred forty".