129842461 has 8 divisors (see below), whose sum is σ = 150179904. Its totient is φ = 109952160.

The previous prime is 129842459. The next prime is 129842473. The reversal of 129842461 is 164248921.

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

It is a cyclic number.

It is not a de Polignac number, because 129842461 - 2¹ = 129842459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129842461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129842431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111160 + ... + 112321.

It is an arithmetic number, because the mean of its divisors is an integer number (18772488).

Almost surely, 2^129842461 is an apocalyptic number.

It is an amenable number.

129842461 is a deficient number, since it is larger than the sum of its proper divisors (20337443).

129842461 is an equidigital number, since it uses as much as digits as its factorization.

129842461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223571.

The product of its digits is 27648, while the sum is 37.

The square root of 129842461 is about 11394.8436145478. The cubic root of 129842461 is about 506.3749882723.

The spelling of 129842461 in words is "one hundred twenty-nine million, eight hundred forty-two thousand, four hundred sixty-one".