123543562 has 4 divisors (see below), whose sum is σ = 185315346. Its totient is φ = 61771780.

The previous prime is 123543559. The next prime is 123543569. The reversal of 123543562 is 265345321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 65950641 + 57592921 = 8121^2 + 7589^2 .

It is not an unprimeable number, because it can be changed into a prime (123543569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30885889 + ... + 30885892.

Almost surely, 2^123543562 is an apocalyptic number.

123543562 is a deficient number, since it is larger than the sum of its proper divisors (61771784).

123543562 is an equidigital number, since it uses as much as digits as its factorization.

123543562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61771783.

The product of its digits is 21600, while the sum is 31.

The square root of 123543562 is about 11115.0151596838. The cubic root of 123543562 is about 498.0504913780.

Adding to 123543562 its reverse (265345321), we get a palindrome (388888883).

The spelling of 123543562 in words is "one hundred twenty-three million, five hundred forty-three thousand, five hundred sixty-two".