129417047 has 2 divisors, whose sum is σ = 129417048. Its totient is φ = 129417046.

The previous prime is 129417023. The next prime is 129417059. The reversal of 129417047 is 740714921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129417047 - 2¹² = 129412951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129416998 and 129417016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129417017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64708523 + 64708524.

It is an arithmetic number, because the mean of its divisors is an integer number (64708524).

Almost surely, 2^129417047 is an apocalyptic number.

129417047 is a deficient number, since it is larger than the sum of its proper divisors (1).

129417047 is an equidigital number, since it uses as much as digits as its factorization.

129417047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 129417047 is about 11376.1613473087. The cubic root of 129417047 is about 505.8213565814.

The spelling of 129417047 in words is "one hundred twenty-nine million, four hundred seventeen thousand, forty-seven".