129424242 has 16 divisors (see below), whose sum is σ = 259413120. Its totient is φ = 43047312.

The previous prime is 129424223. The next prime is 129424271. The reversal of 129424242 is 242424921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20517 + ... + 26072.

It is an arithmetic number, because the mean of its divisors is an integer number (16213320).

Almost surely, 2^129424242 is an apocalyptic number.

129424242 is an abundant number, since it is smaller than the sum of its proper divisors (129988878).

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

129424242 is a wasteful number, since it uses less digits than its factorization.

129424242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47057.

The product of its digits is 9216, while the sum is 30.

The square root of 129424242 is about 11376.4775743637. The cubic root of 129424242 is about 505.8307301977.

The spelling of 129424242 in words is "one hundred twenty-nine million, four hundred twenty-four thousand, two hundred forty-two".