2421071 has 4 divisors (see below), whose sum is σ = 2445144. Its totient is φ = 2397000.

The previous prime is 2421061. The next prime is 2421073. The reversal of 2421071 is 1701242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2421071 - 2¹⁴ = 2404687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421073) 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, 11885 + ... + 12086.

It is an arithmetic number, because the mean of its divisors is an integer number (611286).

2^2421071 is an apocalyptic number.

2421071 is a deficient number, since it is larger than the sum of its proper divisors (24073).

2421071 is a wasteful number, since it uses less digits than its factorization.

2421071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24072.

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

The square root of 2421071 is about 1555.9791129704. The cubic root of 2421071 is about 134.2772717213.

The spelling of 2421071 in words is "two million, four hundred twenty-one thousand, seventy-one".