133454421 has 12 divisors (see below), whose sum is σ = 193130860. Its totient is φ = 88801920.

The previous prime is 133454417. The next prime is 133454483. The reversal of 133454421 is 124454331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24147396 + 109307025 = 4914^2 + 10455^2 .

It is not a de Polignac number, because 133454421 - 2² = 133454417 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 (133454021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8836 + ... + 18573.

Almost surely, 2^133454421 is an apocalyptic number.

It is an amenable number.

133454421 is a deficient number, since it is larger than the sum of its proper divisors (59676439).

133454421 is a wasteful number, since it uses less digits than its factorization.

133454421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27956 (or 27953 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 133454421 is about 11552.2474436795. The cubic root of 133454421 is about 511.0275591720.

It can be divided in two parts, 13345 and 4421, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 133454421 in words is "one hundred thirty-three million, four hundred fifty-four thousand, four hundred twenty-one".