133120087 has 4 divisors (see below), whose sum is σ = 133590760. Its totient is φ = 132649416.

The previous prime is 133120051. The next prime is 133120103. The reversal of 133120087 is 780021331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133120087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133120037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234912 + ... + 235477.

It is an arithmetic number, because the mean of its divisors is an integer number (33397690).

Almost surely, 2^133120087 is an apocalyptic number.

133120087 is a deficient number, since it is larger than the sum of its proper divisors (470673).

133120087 is an equidigital number, since it uses as much as digits as its factorization.

133120087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470672.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 133120087 is about 11537.7678517120. The cubic root of 133120087 is about 510.6004551423.

The spelling of 133120087 in words is "one hundred thirty-three million, one hundred twenty thousand, eighty-seven".