129074347 has 16 divisors (see below), whose sum is σ = 134937088. Its totient is φ = 123379200.

The previous prime is 129074339. The next prime is 129074371. The reversal of 129074347 is 743470921.

It is a cyclic number.

It is not a de Polignac number, because 129074347 - 2³ = 129074339 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129074377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 668683 + ... + 668875.

It is an arithmetic number, because the mean of its divisors is an integer number (8433568).

Almost surely, 2^129074347 is an apocalyptic number.

129074347 is a deficient number, since it is larger than the sum of its proper divisors (5862741).

129074347 is a wasteful number, since it uses less digits than its factorization.

129074347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 129074347 is about 11361.0891643363. The cubic root of 129074347 is about 505.3744854881.

The spelling of 129074347 in words is "one hundred twenty-nine million, seventy-four thousand, three hundred forty-seven".