133891426 has 8 divisors (see below), whose sum is σ = 201344220. Its totient is φ = 66776688.

The previous prime is 133891411. The next prime is 133891469. The reversal of 133891426 is 624198331.

It can be written as a sum of positive squares in 2 ways, for example, as 111281401 + 22610025 = 10549^2 + 4755^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83521 + ... + 85108.

Almost surely, 2^133891426 is an apocalyptic number.

133891426 is a deficient number, since it is larger than the sum of its proper divisors (67452794).

133891426 is a wasteful number, since it uses less digits than its factorization.

133891426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169028.

The product of its digits is 31104, while the sum is 37.

The square root of 133891426 is about 11571.1462699250. The cubic root of 133891426 is about 511.5847488578.

The spelling of 133891426 in words is "one hundred thirty-three million, eight hundred ninety-one thousand, four hundred twenty-six".