129446 has 8 divisors (see below), whose sum is σ = 197640. Its totient is φ = 63568.

The previous prime is 129443. The next prime is 129449. The reversal of 129446 is 644921.

It is an interprime number because it is at equal distance from previous prime (129443) and next prime (129449).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431 + ... + 666.

It is an arithmetic number, because the mean of its divisors is an integer number (24705).

2¹²⁹⁴⁴⁶ is an apocalyptic number.

129446 is a deficient number, since it is larger than the sum of its proper divisors (68194).

129446 is a wasteful number, since it uses less digits than its factorization.

129446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158.

The product of its digits is 1728, while the sum is 26.

The square root of 129446 is about 359.7860475338. The cubic root of 129446 is about 50.5859074317.

It can be divided in two parts, 129 and 446, that added together give a palindrome (575).

The spelling of 129446 in words is "one hundred twenty-nine thousand, four hundred forty-six".