834258421 has 4 divisors (see below), whose sum is σ = 835556512. Its totient is φ = 832960332.

The previous prime is 834258389. The next prime is 834258431. The reversal of 834258421 is 124852438.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 834258421 - 2⁵ = 834258389 is a prime.

It is a super-2 number, since 2×834258421² = 1391974226018826482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (834258431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648081 + ... + 649366.

It is an arithmetic number, because the mean of its divisors is an integer number (208889128).

Almost surely, 2^834258421 is an apocalyptic number.

It is an amenable number.

834258421 is a deficient number, since it is larger than the sum of its proper divisors (1298091).

834258421 is a wasteful number, since it uses less digits than its factorization.

834258421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298090.

The product of its digits is 61440, while the sum is 37.

The square root of 834258421 is about 28883.5320035483. The cubic root of 834258421 is about 941.3841164379.

The spelling of 834258421 in words is "eight hundred thirty-four million, two hundred fifty-eight thousand, four hundred twenty-one".