1323642125 has 64 divisors (see below), whose sum is σ = 1918076160. Its totient is φ = 903571200.

The previous prime is 1323642121. The next prime is 1323642127. The reversal of 1323642125 is 5212463231.

It is a happy number.

It is not a de Polignac number, because 1323642125 - 2² = 1323642121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323642121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1327127 + ... + 1328123.

It is an arithmetic number, because the mean of its divisors is an integer number (29969940).

Almost surely, 2^1323642125 is an apocalyptic number.

It is an amenable number.

1323642125 is a deficient number, since it is larger than the sum of its proper divisors (594434035).

1323642125 is a wasteful number, since it uses less digits than its factorization.

1323642125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087 (or 1077 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 1323642125 is about 36381.8928177191. The cubic root of 1323642125 is about 1097.9692906055.

The spelling of 1323642125 in words is "one billion, three hundred twenty-three million, six hundred forty-two thousand, one hundred twenty-five".