2420643 has 8 divisors (see below), whose sum is σ = 3275968. Its totient is φ = 1589544.

The previous prime is 2420633. The next prime is 2420687. The reversal of 2420643 is 3460242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2420643 - 2⁵ = 2420611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2420633) 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 7 ways as a sum of consecutive naturals, for example, 5821 + ... + 6222.

It is an arithmetic number, because the mean of its divisors is an integer number (409496).

2^2420643 is an apocalyptic number.

2420643 is a deficient number, since it is larger than the sum of its proper divisors (855325).

2420643 is a wasteful number, since it uses less digits than its factorization.

2420643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12113.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2420643 is about 1555.8415729116. The cubic root of 2420643 is about 134.2693586862.

Adding to 2420643 its reverse (3460242), we get a palindrome (5880885).

The spelling of 2420643 in words is "two million, four hundred twenty thousand, six hundred forty-three".