1323102420 has 72 divisors (see below), whose sum is σ = 4018420224. Its totient is φ = 352387008.

The previous prime is 1323102377. The next prime is 1323102433. The reversal of 1323102420 is 242013231.

1323102420 is a `hidden beast` number, since 13 + 231 + 0 + 2 + 420 = 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 = 1323102393 and 1323102402.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 155517 + ... + 163803.

It is an arithmetic number, because the mean of its divisors is an integer number (55811392).

Almost surely, 2^1323102420 is an apocalyptic number.

1323102420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323102420 is an abundant number, since it is smaller than the sum of its proper divisors (2695317804).

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

1323102420 is a wasteful number, since it uses less digits than its factorization.

1323102420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9189 (or 9184 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1323102420 is about 36374.4748415699. The cubic root of 1323102420 is about 1097.8200407786.

Adding to 1323102420 its reverse (242013231), we get a palindrome (1565115651).

The spelling of 1323102420 in words is "one billion, three hundred twenty-three million, one hundred two thousand, four hundred twenty".