133429947 has 16 divisors (see below), whose sum is σ = 204691200. Its totient is φ = 75732192.

The previous prime is 133429939. The next prime is 133429987. The reversal of 133429947 is 749924331.

It is not a de Polignac number, because 133429947 - 2³ = 133429939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133429899 and 133429908.

It is not an unprimeable number, because it can be changed into a prime (133429987) 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, 18193 + ... + 24450.

It is an arithmetic number, because the mean of its divisors is an integer number (12793200).

Almost surely, 2^133429947 is an apocalyptic number.

133429947 is a deficient number, since it is larger than the sum of its proper divisors (71261253).

133429947 is a wasteful number, since it uses less digits than its factorization.

133429947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42802.

The product of its digits is 163296, while the sum is 42.

The square root of 133429947 is about 11551.1881207086. The cubic root of 133429947 is about 510.9963184108.

The spelling of 133429947 in words is "one hundred thirty-three million, four hundred twenty-nine thousand, nine hundred forty-seven".