1323140402 has 8 divisors (see below), whose sum is σ = 1989661212. Its totient is φ = 659920000.

The previous prime is 1323140363. The next prime is 1323140437. The reversal of 1323140402 is 2040413231.

It can be written as a sum of positive squares in 2 ways, for example, as 1322122321 + 1018081 = 36361^2 + 1009^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 824099 + ... + 825702.

Almost surely, 2^1323140402 is an apocalyptic number.

1323140402 is a deficient number, since it is larger than the sum of its proper divisors (666520810).

1323140402 is a wasteful number, since it uses less digits than its factorization.

1323140402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650204.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1323140402 is about 36374.9969347078. The cubic root of 1323140402 is about 1097.8305456348.

Adding to 1323140402 its reverse (2040413231), we get a palindrome (3363553633).

The spelling of 1323140402 in words is "one billion, three hundred twenty-three million, one hundred forty thousand, four hundred two".