129441492 has 36 divisors (see below), whose sum is σ = 337757056. Its totient is φ = 41754960.

The previous prime is 129441479. The next prime is 129441527. The reversal of 129441492 is 294144921.

129441492 is a `hidden beast` number, since 129 + 4 + 41 + 492 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56878 + ... + 59109.

Almost surely, 2^129441492 is an apocalyptic number.

129441492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129441492 is an abundant number, since it is smaller than the sum of its proper divisors (208315564).

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

129441492 is a wasteful number, since it uses less digits than its factorization.

129441492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116028 (or 116023 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 129441492 is about 11377.2356923815. The cubic root of 129441492 is about 505.8532020117.

The spelling of 129441492 in words is "one hundred twenty-nine million, four hundred forty-one thousand, four hundred ninety-two".