235252421 has 2 divisors, whose sum is σ = 235252422. Its totient is φ = 235252420.

The previous prime is 235252393. The next prime is 235252429. The reversal of 235252421 is 124252532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144336196 + 90916225 = 12014^2 + 9535^2 .

It is a cyclic number.

It is not a de Polignac number, because 235252421 - 2¹⁴ = 235236037 is a prime.

It is a super-2 number, since 2×235252421² = 110687403172722482, which contains 22 as substring.

It is a Chen prime.

It is equal to p_12915116 and since 235252421 and 12915116 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235252429) 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 as a sum of consecutive naturals, namely, 117626210 + 117626211.

It is an arithmetic number, because the mean of its divisors is an integer number (117626211).

Almost surely, 2^235252421 is an apocalyptic number.

It is an amenable number.

235252421 is a deficient number, since it is larger than the sum of its proper divisors (1).

235252421 is an equidigital number, since it uses as much as digits as its factorization.

235252421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 26.

The square root of 235252421 is about 15337.9405723193. The cubic root of 235252421 is about 617.3214493576.

The spelling of 235252421 in words is "two hundred thirty-five million, two hundred fifty-two thousand, four hundred twenty-one".