133420023 has 24 divisors (see below), whose sum is σ = 211335696. Its totient is φ = 80438400.

The previous prime is 133420009. The next prime is 133420031. The reversal of 133420023 is 320024331.

133420023 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 133420023 - 2⁵ = 133419991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133419978 and 133420005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133420003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16083 + ... + 22923.

It is an arithmetic number, because the mean of its divisors is an integer number (8805654).

Almost surely, 2^133420023 is an apocalyptic number.

133420023 is a deficient number, since it is larger than the sum of its proper divisors (77915673).

133420023 is a wasteful number, since it uses less digits than its factorization.

133420023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7055 (or 7052 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 133420023 is about 11550.7585465198. The cubic root of 133420023 is about 510.9836494578.

Adding to 133420023 its reverse (320024331), we get a palindrome (453444354).

The spelling of 133420023 in words is "one hundred thirty-three million, four hundred twenty thousand, twenty-three".