1242400323 has 8 divisors (see below), whose sum is σ = 1656697536. Its totient is φ = 828185000.

The previous prime is 1242400321. The next prime is 1242400331. The reversal of 1242400323 is 3230042421.

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

It is a cyclic number.

It is not a de Polignac number, because 1242400323 - 2¹ = 1242400321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1242400323.

It is not an unprimeable number, because it can be changed into a prime (1242400321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43408 + ... + 66098.

It is an arithmetic number, because the mean of its divisors is an integer number (207087192).

Almost surely, 2^1242400323 is an apocalyptic number.

1242400323 is a deficient number, since it is larger than the sum of its proper divisors (414297213).

1242400323 is a wasteful number, since it uses less digits than its factorization.

1242400323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40945.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1242400323 is about 35247.6995419559. The cubic root of 1242400323 is about 1075.0298381478.

Adding to 1242400323 its reverse (3230042421), we get a palindrome (4472442744).

The spelling of 1242400323 in words is "one billion, two hundred forty-two million, four hundred thousand, three hundred twenty-three".