3123456 has 108 divisors (see below), whose sum is σ = 9786672. Its totient is φ = 881664.

The previous prime is 3123431. The next prime is 3123481. The reversal of 3123456 is 6543213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3123431) and next prime (3123481).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37591 + ... + 37673.

Almost surely, 2^3123456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3123456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4893336).

3123456 is an abundant number, since it is smaller than the sum of its proper divisors (6663216).

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

3123456 is an equidigital number, since it uses as much as digits as its factorization.

3123456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 95 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 3123456 is about 1767.3301898627. The cubic root of 3123456 is about 146.1768046326.

Adding to 3123456 its reverse (6543213), we get a palindrome (9666669).

The spelling of 3123456 in words is "three million, one hundred twenty-three thousand, four hundred fifty-six".