129541898 has 8 divisors (see below), whose sum is σ = 201013380. Its totient is φ = 62537440.

The previous prime is 129541891. The next prime is 129541913. The reversal of 129541898 is 898145921.

It can be written as a sum of positive squares in 2 ways, for example, as 122921569 + 6620329 = 11087^2 + 2573^2 .

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

It is a super-2 number, since 2×129541898² = 33562206674884808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129541891) 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, 1116683 + ... + 1116798.

Almost surely, 2^129541898 is an apocalyptic number.

129541898 is a deficient number, since it is larger than the sum of its proper divisors (71471482).

129541898 is a wasteful number, since it uses less digits than its factorization.

129541898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233512.

The product of its digits is 207360, while the sum is 47.

The square root of 129541898 is about 11381.6474202990. The cubic root of 129541898 is about 505.9839626844.

The spelling of 129541898 in words is "one hundred twenty-nine million, five hundred forty-one thousand, eight hundred ninety-eight".