123032555 has 4 divisors (see below), whose sum is σ = 147639072. Its totient is φ = 98426040.

The previous prime is 123032549. The next prime is 123032561. The reversal of 123032555 is 555230321.

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

It is an interprime number because it is at equal distance from previous prime (123032549) and next prime (123032561).

It is not a de Polignac number, because 123032555 - 2⁶ = 123032491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12303251 + ... + 12303260.

It is an arithmetic number, because the mean of its divisors is an integer number (36909768).

Almost surely, 2^123032555 is an apocalyptic number.

123032555 is a deficient number, since it is larger than the sum of its proper divisors (24606517).

123032555 is an equidigital number, since it uses as much as digits as its factorization.

123032555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24606516.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 123032555 is about 11092.0041020548. The cubic root of 123032555 is about 497.3628553901.

Adding to 123032555 its reverse (555230321), we get a palindrome (678262876).

The spelling of 123032555 in words is "one hundred twenty-three million, thirty-two thousand, five hundred fifty-five".