3402420 has 48 divisors (see below), whose sum is σ = 10889088. Its totient is φ = 777600.

The previous prime is 3402407. The next prime is 3402437. The reversal of 3402420 is 242043.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3402420.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 3631 + ... + 4470.

It is an arithmetic number, because the mean of its divisors is an integer number (226856).

Almost surely, 2^3402420 is an apocalyptic number.

3402420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3402420 is an abundant number, since it is smaller than the sum of its proper divisors (7486668).

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

3402420 is a wasteful number, since it uses less digits than its factorization.

3402420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8120 (or 8118 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 3402420 is about 1844.5649893674. The cubic root of 3402420 is about 150.4051270510.

Adding to 3402420 its reverse (242043), we get a palindrome (3644463).

The spelling of 3402420 in words is "three million, four hundred two thousand, four hundred twenty".