129141492 has 24 divisors (see below), whose sum is σ = 304718400. Its totient is φ = 42563136.

The previous prime is 129141491. The next prime is 129141497. The reversal of 129141492 is 294141921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129141491) 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, 59392 + ... + 61527.

It is an arithmetic number, because the mean of its divisors is an integer number (12696600).

Almost surely, 2^129141492 is an apocalyptic number.

129141492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129141492 is an abundant number, since it is smaller than the sum of its proper divisors (175576908).

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

129141492 is a wasteful number, since it uses less digits than its factorization.

129141492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121015 (or 121013 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 129141492 is about 11364.0438225132. The cubic root of 129141492 is about 505.4621029175.

The spelling of 129141492 in words is "one hundred twenty-nine million, one hundred forty-one thousand, four hundred ninety-two".