133424004021 has 32 divisors (see below), whose sum is σ = 221815065600. Its totient is φ = 69305134080.

The previous prime is 133424004017. The next prime is 133424004053. The reversal of 133424004021 is 120400424331.

It is not a de Polignac number, because 133424004021 - 2² = 133424004017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 133424003982 and 133424004000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133424004001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4079110 + ... + 4111688.

It is an arithmetic number, because the mean of its divisors is an integer number (6931720800).

Almost surely, 2^133424004021 is an apocalyptic number.

133424004021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133424004021 is a deficient number, since it is larger than the sum of its proper divisors (88391061579).

133424004021 is a wasteful number, since it uses less digits than its factorization.

133424004021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50329.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 133424004021 its reverse (120400424331), we get a palindrome (253824428352).

The spelling of 133424004021 in words is "one hundred thirty-three billion, four hundred twenty-four million, four thousand, twenty-one".