133971475 has 24 divisors (see below), whose sum is σ = 191893968. Its totient is φ = 91699200.

The previous prime is 133971469. The next prime is 133971511. The reversal of 133971475 is 574179331.

It is not a de Polignac number, because 133971475 - 2⁵ = 133971443 is a prime.

It is a super-2 number, since 2×133971475² = 35896712227351250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9654 + ... + 19003.

It is an arithmetic number, because the mean of its divisors is an integer number (7995582).

Almost surely, 2^133971475 is an apocalyptic number.

133971475 is a deficient number, since it is larger than the sum of its proper divisors (57922493).

133971475 is a wasteful number, since it uses less digits than its factorization.

133971475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28695 (or 28690 counting only the distinct ones).

The product of its digits is 79380, while the sum is 40.

The square root of 133971475 is about 11574.6047448714. The cubic root of 133971475 is about 511.6866814218.

The spelling of 133971475 in words is "one hundred thirty-three million, nine hundred seventy-one thousand, four hundred seventy-five".