2058421 has 4 divisors (see below), whose sum is σ = 2114092. Its totient is φ = 2002752.

The previous prime is 2058409. The next prime is 2058439. The reversal of 2058421 is 1248502.

2058421 = 1014² + 1015².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1248502 = 2 ⋅624251.

It can be written as a sum of positive squares in 2 ways, for example, as 1030225 + 1028196 = 1015^2 + 1014^2 .

It is a cyclic number.

It is not a de Polignac number, because 2058421 - 2⁵ = 2058389 is a prime.

It is a Duffinian number.

2058421 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2058392 and 2058401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2058401) 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 3 ways as a sum of consecutive naturals, for example, 27780 + ... + 27853.

It is an arithmetic number, because the mean of its divisors is an integer number (528523).

2^2058421 is an apocalyptic number.

2058421 is the 1015-th centered square number.

It is an amenable number.

2058421 is a deficient number, since it is larger than the sum of its proper divisors (55671).

2058421 is an equidigital number, since it uses as much as digits as its factorization.

2058421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55670.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2058421 is about 1434.7198332776. The cubic root of 2058421 is about 127.2071144644.

The spelling of 2058421 in words is "two million, fifty-eight thousand, four hundred twenty-one".