133042251 has 8 divisors (see below), whose sum is σ = 177448960. Its totient is φ = 88665192.

The previous prime is 133042219. The next prime is 133042267. The reversal of 133042251 is 152240331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133042251 - 2⁵ = 133042219 is a prime.

It is a super-2 number, since 2×133042251² = 35400481102294002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133042201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7146 + ... + 17808.

It is an arithmetic number, because the mean of its divisors is an integer number (22181120).

Almost surely, 2^133042251 is an apocalyptic number.

133042251 is a deficient number, since it is larger than the sum of its proper divisors (44406709).

133042251 is a wasteful number, since it uses less digits than its factorization.

133042251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14825.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 133042251 is about 11534.3942623789. The cubic root of 133042251 is about 510.5009188353.

Adding to 133042251 its reverse (152240331), we get a palindrome (285282582).

The spelling of 133042251 in words is "one hundred thirty-three million, forty-two thousand, two hundred fifty-one".