133420398 has 16 divisors (see below), whose sum is σ = 271876176. Its totient is φ = 43634240.

The previous prime is 133420393. The next prime is 133420423. The reversal of 133420398 is 893024331.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133420393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209463 + ... + 210098.

It is an arithmetic number, because the mean of its divisors is an integer number (16992261).

Almost surely, 2^133420398 is an apocalyptic number.

133420398 is an abundant number, since it is smaller than the sum of its proper divisors (138455778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133420398 is a wasteful number, since it uses less digits than its factorization.

133420398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419619.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 133420398 is about 11550.7747792085. The cubic root of 133420398 is about 510.9841281932.

The spelling of 133420398 in words is "one hundred thirty-three million, four hundred twenty thousand, three hundred ninety-eight".