2061421 has 4 divisors (see below), whose sum is σ = 2151072. Its totient is φ = 1971772.

The previous prime is 2061419. The next prime is 2061427. The reversal of 2061421 is 1241602.

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 2061421 - 2¹ = 2061419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2061395 and 2061404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061427) 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, 44791 + ... + 44836.

It is an arithmetic number, because the mean of its divisors is an integer number (537768).

2^2061421 is an apocalyptic number.

It is an amenable number.

2061421 is a deficient number, since it is larger than the sum of its proper divisors (89651).

2061421 is an equidigital number, since it uses as much as digits as its factorization.

2061421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89650.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2061421 is about 1435.7649529084. The cubic root of 2061421 is about 127.2688828616.

The spelling of 2061421 in words is "two million, sixty-one thousand, four hundred twenty-one".