129468643 has 2 divisors, whose sum is σ = 129468644. Its totient is φ = 129468642.

The previous prime is 129468593. The next prime is 129468653. The reversal of 129468643 is 346864921.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129468643 - 2¹³ = 129460451 is a prime.

It is a super-2 number, since 2×129468643² = 33524259040522898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129468643.

It is not a weakly prime, because it can be changed into another prime (129468653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64734321 + 64734322.

It is an arithmetic number, because the mean of its divisors is an integer number (64734322).

Almost surely, 2^129468643 is an apocalyptic number.

129468643 is a deficient number, since it is larger than the sum of its proper divisors (1).

129468643 is an equidigital number, since it uses as much as digits as its factorization.

129468643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 43.

The square root of 129468643 is about 11378.4288458469. The cubic root of 129468643 is about 505.8885679517. Note that the first 3 decimals are identical.

The spelling of 129468643 in words is "one hundred twenty-nine million, four hundred sixty-eight thousand, six hundred forty-three".