133234421 has 8 divisors (see below), whose sum is σ = 135920160. Its totient is φ = 130555152.

The previous prime is 133234357. The next prime is 133234427. The reversal of 133234421 is 124432331.

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 133234421 - 2⁶ = 133234357 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 (133234427) 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, 76466 + ... + 78188.

It is an arithmetic number, because the mean of its divisors is an integer number (16990020).

Almost surely, 2^133234421 is an apocalyptic number.

It is an amenable number.

133234421 is a deficient number, since it is larger than the sum of its proper divisors (2685739).

133234421 is a wasteful number, since it uses less digits than its factorization.

133234421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3235.

The product of its digits is 1728, while the sum is 23.

The square root of 133234421 is about 11542.7215594937. The cubic root of 133234421 is about 510.7465945874.

Adding to 133234421 its reverse (124432331), we get a palindrome (257666752).

It can be divided in two parts, 1332 and 34421, that added together give a palindrome (35753).

The spelling of 133234421 in words is "one hundred thirty-three million, two hundred thirty-four thousand, four hundred twenty-one".