1223541 has 24 divisors (see below), whose sum is σ = 2044224. Its totient is φ = 696960.

The previous prime is 1223533. The next prime is 1223549. The reversal of 1223541 is 1453221.

1223541 is a `hidden beast` number, since 122 + 3 + 541 = 666.

It is an interprime number because it is at equal distance from previous prime (1223533) and next prime (1223549).

It is not a de Polignac number, because 1223541 - 2³ = 1223533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223549) 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, 1320 + ... + 2046.

It is an arithmetic number, because the mean of its divisors is an integer number (85176).

2^1223541 is an apocalyptic number.

1223541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1223541 is a deficient number, since it is larger than the sum of its proper divisors (820683).

1223541 is a wasteful number, since it uses less digits than its factorization.

1223541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761 (or 758 counting only the distinct ones).

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

The square root of 1223541 is about 1106.1378756737. The cubic root of 1223541 is about 106.9562519499.

Adding to 1223541 its reverse (1453221), we get a palindrome (2676762).

It can be divided in two parts, 1223 and 541, that added together give a square (1764 = 42²).

The spelling of 1223541 in words is "one million, two hundred twenty-three thousand, five hundred forty-one".