133461240 has 64 divisors (see below), whose sum is σ = 436786560. Its totient is φ = 32353920.

The previous prime is 133461217. The next prime is 133461241. The reversal of 133461240 is 42164331.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 133461240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133461241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49234 + ... + 51873.

It is an arithmetic number, because the mean of its divisors is an integer number (6824790).

Almost surely, 2^133461240 is an apocalyptic number.

133461240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133461240 is an abundant number, since it is smaller than the sum of its proper divisors (303325320).

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

133461240 is a wasteful number, since it uses less digits than its factorization.

133461240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101132 (or 101128 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 133461240 is about 11552.5425772857. The cubic root of 133461240 is about 511.0362628616.

The spelling of 133461240 in words is "one hundred thirty-three million, four hundred sixty-one thousand, two hundred forty".