1245666323 has 12 divisors (see below), whose sum is σ = 1370284104. Its totient is φ = 1131530400.

The previous prime is 1245666311. The next prime is 1245666329. The reversal of 1245666323 is 3236665421.

It is a happy number.

It is not a de Polignac number, because 1245666323 - 2⁴ = 1245666307 is a prime.

It is a super-3 number, since 3×1245666323³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1245666329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186815 + ... + 193367.

It is an arithmetic number, because the mean of its divisors is an integer number (114190342).

Almost surely, 2^1245666323 is an apocalyptic number.

1245666323 is a deficient number, since it is larger than the sum of its proper divisors (124617781).

1245666323 is a wasteful number, since it uses less digits than its factorization.

1245666323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8146 (or 8135 counting only the distinct ones).

The product of its digits is 155520, while the sum is 38.

The square root of 1245666323 is about 35293.9983991613. The cubic root of 1245666323 is about 1075.9710203842.

The spelling of 1245666323 in words is "one billion, two hundred forty-five million, six hundred sixty-six thousand, three hundred twenty-three".