135030421 has 2 divisors, whose sum is σ = 135030422. Its totient is φ = 135030420.

The previous prime is 135030407. The next prime is 135030437. The reversal of 135030421 is 124030531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92910321 + 42120100 = 9639^2 + 6490^2 .

It is a cyclic number.

It is not a de Polignac number, because 135030421 - 2²³ = 126641813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135030461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67515210 + 67515211.

It is an arithmetic number, because the mean of its divisors is an integer number (67515211).

Almost surely, 2^135030421 is an apocalyptic number.

It is an amenable number.

135030421 is a deficient number, since it is larger than the sum of its proper divisors (1).

135030421 is an equidigital number, since it uses as much as digits as its factorization.

135030421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 135030421 is about 11620.2590762857. The cubic root of 135030421 is about 513.0313138337.

Adding to 135030421 its reverse (124030531), we get a palindrome (259060952).

The spelling of 135030421 in words is "one hundred thirty-five million, thirty thousand, four hundred twenty-one".