1543122 has 48 divisors (see below), whose sum is σ = 3936192. Its totient is φ = 427680.

The previous prime is 1543111. The next prime is 1543127. The reversal of 1543122 is 2213451.

1543122 is a `hidden beast` number, since 1 + 543 + 122 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1543095 and 1543104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1543127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4497 + ... + 4827.

It is an arithmetic number, because the mean of its divisors is an integer number (82004).

2^1543122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1543122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1968096).

1543122 is an abundant number, since it is smaller than the sum of its proper divisors (2393070).

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

1543122 is a wasteful number, since it uses less digits than its factorization.

1543122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 380 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 1543122 is about 1242.2246173700. The cubic root of 1543122 is about 115.5580188632.

Adding to 1543122 its reverse (2213451), we get a palindrome (3756573).

The spelling of 1543122 in words is "one million, five hundred forty-three thousand, one hundred twenty-two".