133115145 has 32 divisors (see below), whose sum is σ = 223305984. Its totient is φ = 67584000.

The previous prime is 133115141. The next prime is 133115149. The reversal of 133115145 is 541511331.

It is an interprime number because it is at equal distance from previous prime (133115141) and next prime (133115149).

It is not a de Polignac number, because 133115145 - 2² = 133115141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133115141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82345 + ... + 83945.

It is an arithmetic number, because the mean of its divisors is an integer number (6978312).

Almost surely, 2^133115145 is an apocalyptic number.

133115145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133115145 is a deficient number, since it is larger than the sum of its proper divisors (90190839).

133115145 is a wasteful number, since it uses less digits than its factorization.

133115145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873.

The product of its digits is 900, while the sum is 24.

The square root of 133115145 is about 11537.5536835154. The cubic root of 133115145 is about 510.5941364899.

Adding to 133115145 its reverse (541511331), we get a palindrome (674626476).

The spelling of 133115145 in words is "one hundred thirty-three million, one hundred fifteen thousand, one hundred forty-five".