129270141 has 64 divisors (see below), whose sum is σ = 257187840. Its totient is φ = 61974720.

The previous prime is 129270133. The next prime is 129270151. The reversal of 129270141 is 141072921.

It is not a de Polignac number, because 129270141 - 2³ = 129270133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129270101) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24636 + ... + 29418.

It is an arithmetic number, because the mean of its divisors is an integer number (4018560).

Almost surely, 2^129270141 is an apocalyptic number.

129270141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

129270141 is a deficient number, since it is larger than the sum of its proper divisors (127917699).

129270141 is a wasteful number, since it uses less digits than its factorization.

129270141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823 (or 4817 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 129270141 is about 11369.7027665634. The cubic root of 129270141 is about 505.6298920402.

The spelling of 129270141 in words is "one hundred twenty-nine million, two hundred seventy thousand, one hundred forty-one".