2071421 has 4 divisors (see below), whose sum is σ = 2259744. Its totient is φ = 1883100.

The previous prime is 2071411. The next prime is 2071427. The reversal of 2071421 is 1241702.

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 2071421 - 2¹⁴ = 2055037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2071421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2071427) 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, 94145 + ... + 94166.

It is an arithmetic number, because the mean of its divisors is an integer number (564936).

2^2071421 is an apocalyptic number.

It is an amenable number.

2071421 is a deficient number, since it is larger than the sum of its proper divisors (188323).

2071421 is a wasteful number, since it uses less digits than its factorization.

2071421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188322.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 2071421 is about 1439.2432039096. The cubic root of 2071421 is about 127.4743457291.

The spelling of 2071421 in words is "two million, seventy-one thousand, four hundred twenty-one".