2420442 has 40 divisors (see below), whose sum is σ = 5529216. Its totient is φ = 791208.

The previous prime is 2420423. The next prime is 2420459. The reversal of 2420442 is 2440242.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 12.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 10743 + ... + 10965.

2^2420442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2420442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2764608).

2420442 is an abundant number, since it is smaller than the sum of its proper divisors (3108774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2420442 is a wasteful number, since it uses less digits than its factorization.

2420442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 2420442 is about 1555.7769763048. The cubic root of 2420442 is about 134.2656421960.

Adding to 2420442 its reverse (2440242), we get a palindrome (4860684).

The spelling of 2420442 in words is "two million, four hundred twenty thousand, four hundred forty-two".