3121456 has 40 divisors (see below), whose sum is σ = 6683600. Its totient is φ = 1403136.

The previous prime is 3121441. The next prime is 3121457. The reversal of 3121456 is 6541213.

It is not an unprimeable number, because it can be changed into a prime (3121457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8770 + ... + 9118.

It is an arithmetic number, because the mean of its divisors is an integer number (167090).

Almost surely, 2^3121456 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 3121456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3341800).

3121456 is an abundant number, since it is smaller than the sum of its proper divisors (3562144).

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

3121456 is a wasteful number, since it uses less digits than its factorization.

3121456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 407 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 3121456 is about 1766.7642740332. The cubic root of 3121456 is about 146.1455981708.

Adding to 3121456 its reverse (6541213), we get a palindrome (9662669).

The spelling of 3121456 in words is "three million, one hundred twenty-one thousand, four hundred fifty-six".