129419042 has 8 divisors (see below), whose sum is σ = 198863532. Its totient is φ = 63131200.

The previous prime is 129419041. The next prime is 129419047. The reversal of 129419042 is 240914921.

It can be written as a sum of positive squares in 2 ways, for example, as 107972881 + 21446161 = 10391^2 + 4631^2 .

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

It is not an unprimeable number, because it can be changed into a prime (129419041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789059 + ... + 789222.

Almost surely, 2^129419042 is an apocalyptic number.

129419042 is a deficient number, since it is larger than the sum of its proper divisors (69444490).

129419042 is a wasteful number, since it uses less digits than its factorization.

129419042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578324.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 129419042 is about 11376.2490303263. The cubic root of 129419042 is about 505.8239556940.

The spelling of 129419042 in words is "one hundred twenty-nine million, four hundred nineteen thousand, forty-two".