133402249 has 8 divisors (see below), whose sum is σ = 141202880. Its totient is φ = 125679600.

The previous prime is 133402229. The next prime is 133402253. The reversal of 133402249 is 942204331.

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

It is a cyclic number.

It is not a de Polignac number, because 133402249 - 2¹⁹ = 132877961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133402229) 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, 15957 + ... + 22834.

It is an arithmetic number, because the mean of its divisors is an integer number (17650360).

Almost surely, 2^133402249 is an apocalyptic number.

133402249 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

133402249 is a deficient number, since it is larger than the sum of its proper divisors (7800631).

133402249 is a wasteful number, since it uses less digits than its factorization.

133402249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38991.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 133402249 is about 11549.9891341940. The cubic root of 133402249 is about 510.9609576445.

The spelling of 133402249 in words is "one hundred thirty-three million, four hundred two thousand, two hundred forty-nine".