1323146420 has 24 divisors (see below), whose sum is σ = 2790542664. Its totient is φ = 526985216.

The previous prime is 1323146413. The next prime is 1323146441. The reversal of 1323146420 is 246413231.

It can be written as a sum of positive squares in 4 ways, for example, as 235070224 + 1088076196 = 15332^2 + 32986^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1323146420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137309 + ... + 146628.

It is an arithmetic number, because the mean of its divisors is an integer number (116272611).

Almost surely, 2^1323146420 is an apocalyptic number.

1323146420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323146420 is an abundant number, since it is smaller than the sum of its proper divisors (1467396244).

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

1323146420 is a wasteful number, since it uses less digits than its factorization.

1323146420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284179 (or 284177 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 1323146420 is about 36375.0796562702. The cubic root of 1323146420 is about 1097.8322100422.

Adding to 1323146420 its reverse (246413231), we get a palindrome (1569559651).

The spelling of 1323146420 in words is "one billion, three hundred twenty-three million, one hundred forty-six thousand, four hundred twenty".