133134240 has 48 divisors (see below), whose sum is σ = 419374368. Its totient is φ = 35502336.

The previous prime is 133134217. The next prime is 133134263. The reversal of 133134240 is 42431331.

It is an interprime number because it is at equal distance from previous prime (133134217) and next prime (133134263).

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138202 + ... + 139161.

It is an arithmetic number, because the mean of its divisors is an integer number (8736966).

Almost surely, 2^133134240 is an apocalyptic number.

133134240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133134240 is an abundant number, since it is smaller than the sum of its proper divisors (286240128).

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

133134240 is a wasteful number, since it uses less digits than its factorization.

133134240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277381 (or 277373 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 133134240 is about 11538.3811689509. The cubic root of 133134240 is about 510.6185497623.

Adding to 133134240 its reverse (42431331), we get a palindrome (175565571).

The spelling of 133134240 in words is "one hundred thirty-three million, one hundred thirty-four thousand, two hundred forty".