133261340 has 12 divisors (see below), whose sum is σ = 279848856. Its totient is φ = 53304528.

The previous prime is 133261339. The next prime is 133261367. The reversal of 133261340 is 43162331.

It is a congruent number.

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, 3331514 + ... + 3331553.

It is an arithmetic number, because the mean of its divisors is an integer number (23320738).

Almost surely, 2^133261340 is an apocalyptic number.

133261340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133261340 is an abundant number, since it is smaller than the sum of its proper divisors (146587516).

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

133261340 is a wasteful number, since it uses less digits than its factorization.

133261340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6663076 (or 6663074 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 133261340 is about 11543.8875600900. The cubic root of 133261340 is about 510.7809897575.

Subtracting from 133261340 its reverse (43162331), we obtain a palindrome (90099009).

The spelling of 133261340 in words is "one hundred thirty-three million, two hundred sixty-one thousand, three hundred forty".