3123420 has 24 divisors (see below), whose sum is σ = 8745744. Its totient is φ = 832896.

The previous prime is 3123413. The next prime is 3123431. The reversal of 3123420 is 243213.

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

It is a self number, because there is not a number n which added to its sum of digits gives 3123420.

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 7 ways as a sum of consecutive naturals, for example, 25969 + ... + 26088.

It is an arithmetic number, because the mean of its divisors is an integer number (364406).

Almost surely, 2^3123420 is an apocalyptic number.

3123420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3123420 is an abundant number, since it is smaller than the sum of its proper divisors (5622324).

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

3123420 is a wasteful number, since it uses less digits than its factorization.

3123420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52069 (or 52067 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 3123420 is about 1767.3200049793. The cubic root of 3123420 is about 146.1762430341.

Adding to 3123420 its reverse (243213), we get a palindrome (3366633).

The spelling of 3123420 in words is "three million, one hundred twenty-three thousand, four hundred twenty".