133194457 has 12 divisors (see below), whose sum is σ = 146879568. Its totient is φ = 119786000.

The previous prime is 133194443. The next prime is 133194469. The reversal of 133194457 is 754491331.

It is a de Polignac number, because none of the positive numbers 2^k-133194457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133194407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111618 + ... + 112804.

It is an arithmetic number, because the mean of its divisors is an integer number (12239964).

Almost surely, 2^133194457 is an apocalyptic number.

It is an amenable number.

133194457 is a deficient number, since it is larger than the sum of its proper divisors (13685111).

133194457 is a wasteful number, since it uses less digits than its factorization.

133194457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400 (or 1299 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 133194457 is about 11540.9902954643. The cubic root of 133194457 is about 510.6955229050.

It can be divided in two parts, 13 and 3194457, that multiplied together give a triangular number (41527941 = T₉₁₁₃).

The spelling of 133194457 in words is "one hundred thirty-three million, one hundred ninety-four thousand, four hundred fifty-seven".