133787841 has 16 divisors (see below), whose sum is σ = 206048448. Its totient is φ = 76313600.

The previous prime is 133787839. The next prime is 133787861. The reversal of 133787841 is 148787331.

It is a happy number.

It is not a de Polignac number, because 133787841 - 2¹ = 133787839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133787793 and 133787802.

It is not an unprimeable number, because it can be changed into a prime (133787831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118680 + ... + 119801.

It is an arithmetic number, because the mean of its divisors is an integer number (12878028).

Almost surely, 2^133787841 is an apocalyptic number.

133787841 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133787841 is a deficient number, since it is larger than the sum of its proper divisors (72260607).

133787841 is a wasteful number, since it uses less digits than its factorization.

133787841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238512.

The product of its digits is 112896, while the sum is 42.

The square root of 133787841 is about 11566.6693996154. The cubic root of 133787841 is about 511.4527857701.

The spelling of 133787841 in words is "one hundred thirty-three million, seven hundred eighty-seven thousand, eight hundred forty-one".