133401000 has 128 divisors (see below), whose sum is σ = 424569600. Its totient is φ = 34860800.

The previous prime is 133400987. The next prime is 133401019. The reversal of 133401000 is 104331.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158581 + ... + 159419.

It is an arithmetic number, because the mean of its divisors is an integer number (3316950).

Almost surely, 2^133401000 is an apocalyptic number.

133401000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133401000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212284800).

133401000 is an abundant number, since it is smaller than the sum of its proper divisors (291168600).

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

133401000 is a wasteful number, since it uses less digits than its factorization.

133401000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916 (or 902 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 133401000 is about 11549.9350647525. The cubic root of 133401000 is about 510.9593629882.

Adding to 133401000 its reverse (104331), we get a palindrome (133505331).

The spelling of 133401000 in words is "one hundred thirty-three million, four hundred one thousand".