1323042555 has 16 divisors (see below), whose sum is σ = 2117855520. Its totient is φ = 705293568.

The previous prime is 1323042541. The next prime is 1323042557. The reversal of 1323042555 is 5552403231.

It is not a de Polignac number, because 1323042555 - 2¹² = 1323038459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1323042557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14599 + ... + 53471.

It is an arithmetic number, because the mean of its divisors is an integer number (132365970).

Almost surely, 2^1323042555 is an apocalyptic number.

1323042555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1323042555 is a deficient number, since it is larger than the sum of its proper divisors (794812965).

1323042555 is a wasteful number, since it uses less digits than its factorization.

1323042555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41150.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 1323042555 is about 36373.6519337831. The cubic root of 1323042555 is about 1097.8034832325.

Adding to 1323042555 its reverse (5552403231), we get a palindrome (6875445786).

The spelling of 1323042555 in words is "one billion, three hundred twenty-three million, forty-two thousand, five hundred fifty-five".