2421719 has 4 divisors (see below), whose sum is σ = 2424840. Its totient is φ = 2418600.

The previous prime is 2421707. The next prime is 2421733. The reversal of 2421719 is 9171242.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9171242 = 2 ⋅4585621.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2421719 is a prime.

It is a super-2 number, since 2×2421719² = 11729445829922, 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 (2421119) 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, 617 + ... + 2285.

It is an arithmetic number, because the mean of its divisors is an integer number (606210).

2^2421719 is an apocalyptic number.

2421719 is a deficient number, since it is larger than the sum of its proper divisors (3121).

2421719 is a wasteful number, since it uses less digits than its factorization.

2421719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120.

The product of its digits is 1008, while the sum is 26.

The square root of 2421719 is about 1556.1873280553. The cubic root of 2421719 is about 134.2892504296.

The spelling of 2421719 in words is "two million, four hundred twenty-one thousand, seven hundred nineteen".