129254342 has 16 divisors (see below), whose sum is σ = 231213312. Its totient is φ = 52986120.

The previous prime is 129254329. The next prime is 129254351. The reversal of 129254342 is 243452921.

It is a junction number, because it is equal to n+sod(n) for n = 129254299 and 129254308.

It is a congruent number.

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, 200384 + ... + 201027.

It is an arithmetic number, because the mean of its divisors is an integer number (14450832).

Almost surely, 2^129254342 is an apocalyptic number.

129254342 is a deficient number, since it is larger than the sum of its proper divisors (101958970).

129254342 is a wasteful number, since it uses less digits than its factorization.

129254342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401443.

The product of its digits is 17280, while the sum is 32.

The square root of 129254342 is about 11369.0079602400. The cubic root of 129254342 is about 505.6092923563.

The spelling of 129254342 in words is "one hundred twenty-nine million, two hundred fifty-four thousand, three hundred forty-two".