129461 has 2 divisors, whose sum is σ = 129462. Its totient is φ = 129460.

The previous prime is 129457. The next prime is 129469. The reversal of 129461 is 164921.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87025 + 42436 = 295^2 + 206^2 .

It is a cyclic number.

It is not a de Polignac number, because 129461 - 2² = 129457 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64730 + 64731.

It is an arithmetic number, because the mean of its divisors is an integer number (64731).

2¹²⁹⁴⁶¹ is an apocalyptic number.

It is an amenable number.

129461 is a deficient number, since it is larger than the sum of its proper divisors (1).

129461 is an equidigital number, since it uses as much as digits as its factorization.

129461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 23.

The square root of 129461 is about 359.8068926522. The cubic root of 129461 is about 50.5878612948.

The spelling of 129461 in words is "one hundred twenty-nine thousand, four hundred sixty-one".