133421053 has 4 divisors (see below), whose sum is σ = 135412480. Its totient is φ = 131429628.

The previous prime is 133421047. The next prime is 133421063. The reversal of 133421053 is 350124331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133421053 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 (133421003) 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, 995613 + ... + 995746.

It is an arithmetic number, because the mean of its divisors is an integer number (33853120).

Almost surely, 2^133421053 is an apocalyptic number.

It is an amenable number.

133421053 is a deficient number, since it is larger than the sum of its proper divisors (1991427).

133421053 is an equidigital number, since it uses as much as digits as its factorization.

133421053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991426.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 133421053 is about 11550.8031322502. The cubic root of 133421053 is about 510.9849643823.

Adding to 133421053 its reverse (350124331), we get a palindrome (483545384).

The spelling of 133421053 in words is "one hundred thirty-three million, four hundred twenty-one thousand, fifty-three".