834252421 has 2 divisors, whose sum is σ = 834252422. Its totient is φ = 834252420.

The previous prime is 834252347. The next prime is 834252427. The reversal of 834252421 is 124252438.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 589955521 + 244296900 = 24289^2 + 15630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-834252421 is a prime.

It is a super-2 number, since 2×834252421² = 1391954203888722482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (834252427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417126210 + 417126211.

It is an arithmetic number, because the mean of its divisors is an integer number (417126211).

Almost surely, 2^834252421 is an apocalyptic number.

It is an amenable number.

834252421 is a deficient number, since it is larger than the sum of its proper divisors (1).

834252421 is an equidigital number, since it uses as much as digits as its factorization.

834252421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15360, while the sum is 31.

The square root of 834252421 is about 28883.4281379479. The cubic root of 834252421 is about 941.3818596159.

The spelling of 834252421 in words is "eight hundred thirty-four million, two hundred fifty-two thousand, four hundred twenty-one".