1242307823 has 8 divisors (see below), whose sum is σ = 1261897728. Its totient is φ = 1222862904.

The previous prime is 1242307817. The next prime is 1242307853. The reversal of 1242307823 is 3287032421.

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 1242307823 - 2⁸ = 1242307567 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242307823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242307813) 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, 18911 + ... + 53312.

It is an arithmetic number, because the mean of its divisors is an integer number (157737216).

Almost surely, 2^1242307823 is an apocalyptic number.

1242307823 is a deficient number, since it is larger than the sum of its proper divisors (19589905).

1242307823 is a wasteful number, since it uses less digits than its factorization.

1242307823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72493.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 1242307823 is about 35246.3873751623. The cubic root of 1242307823 is about 1075.0031578779.

The spelling of 1242307823 in words is "one billion, two hundred forty-two million, three hundred seven thousand, eight hundred twenty-three".