135224421 has 8 divisors (see below), whose sum is σ = 180708000. Its totient is φ = 89945232.

The previous prime is 135224363. The next prime is 135224431. The reversal of 135224421 is 124422531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135224421 - 2¹⁵ = 135191653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135224391 and 135224400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135224431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49546 + ... + 52203.

It is an arithmetic number, because the mean of its divisors is an integer number (22588500).

Almost surely, 2^135224421 is an apocalyptic number.

It is an amenable number.

135224421 is a deficient number, since it is larger than the sum of its proper divisors (45483579).

135224421 is a wasteful number, since it uses less digits than its factorization.

135224421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102195.

The product of its digits is 1920, while the sum is 24.

The square root of 135224421 is about 11628.6035705066. The cubic root of 135224421 is about 513.2768892325.

Adding to 135224421 its reverse (124422531), we get a palindrome (259646952).

The spelling of 135224421 in words is "one hundred thirty-five million, two hundred twenty-four thousand, four hundred twenty-one".