129406733 has 2 divisors, whose sum is σ = 129406734. Its totient is φ = 129406732.

The previous prime is 129406721. The next prime is 129406747. The reversal of 129406733 is 337604921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96079204 + 33327529 = 9802^2 + 5773^2 .

It is a cyclic number.

It is not a de Polignac number, because 129406733 - 2¹⁰ = 129405709 is a prime.

It is a super-2 number, since 2×129406733² = 33492205091466578, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 129406693 and 129406702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129406793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64703366 + 64703367.

It is an arithmetic number, because the mean of its divisors is an integer number (64703367).

Almost surely, 2^129406733 is an apocalyptic number.

It is an amenable number.

129406733 is a deficient number, since it is larger than the sum of its proper divisors (1).

129406733 is an equidigital number, since it uses as much as digits as its factorization.

129406733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 129406733 is about 11375.7080219211. The cubic root of 129406733 is about 505.8079189388.

The spelling of 129406733 in words is "one hundred twenty-nine million, four hundred six thousand, seven hundred thirty-three".