129284042 has 8 divisors (see below), whose sum is σ = 196657632. Its totient is φ = 63731500.

The previous prime is 129284033. The next prime is 129284069. The reversal of 129284042 is 240482921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 455084 + ... + 455367.

It is an arithmetic number, because the mean of its divisors is an integer number (24582204).

Almost surely, 2^129284042 is an apocalyptic number.

129284042 is a deficient number, since it is larger than the sum of its proper divisors (67373590).

129284042 is an equidigital number, since it uses as much as digits as its factorization.

129284042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910524.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 129284042 is about 11370.3140677819. The cubic root of 129284042 is about 505.6480156098.

The spelling of 129284042 in words is "one hundred twenty-nine million, two hundred eighty-four thousand, forty-two".