133354421 has 4 divisors (see below), whose sum is σ = 134600832. Its totient is φ = 132108012.

The previous prime is 133354393. The next prime is 133354423. The reversal of 133354421 is 124453331.

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 not a de Polignac number, because 133354421 - 2¹⁸ = 133092277 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 (133354423) 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, 623045 + ... + 623258.

It is an arithmetic number, because the mean of its divisors is an integer number (33650208).

Almost surely, 2^133354421 is an apocalyptic number.

It is an amenable number.

133354421 is a deficient number, since it is larger than the sum of its proper divisors (1246411).

133354421 is a wasteful number, since it uses less digits than its factorization.

133354421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246410.

The product of its digits is 4320, while the sum is 26.

The square root of 133354421 is about 11547.9184704431. The cubic root of 133354421 is about 510.8998863057.

The spelling of 133354421 in words is "one hundred thirty-three million, three hundred fifty-four thousand, four hundred twenty-one".