129490 has 16 divisors (see below), whose sum is σ = 243648. Its totient is φ = 49456.

The previous prime is 129469. The next prime is 129491. The reversal of 129490 is 94921.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129491) 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 7 ways as a sum of consecutive naturals, for example, 52 + ... + 511.

It is an arithmetic number, because the mean of its divisors is an integer number (15228).

2¹²⁹⁴⁹⁰ is an apocalyptic number.

129490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129490 is a deficient number, since it is larger than the sum of its proper divisors (114158).

129490 is a wasteful number, since it uses less digits than its factorization.

129490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 129490 is about 359.8471897903. The cubic root of 129490 is about 50.5916383356.

The spelling of 129490 in words is "one hundred twenty-nine thousand, four hundred ninety".