120243783 has 8 divisors (see below), whose sum is σ = 174900096. Its totient is φ = 72875000.

The previous prime is 120243779. The next prime is 120243811. The reversal of 120243783 is 387342021.

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

It is not a de Polignac number, because 120243783 - 2² = 120243779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120243783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120243713) 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, 1821843 + ... + 1821908.

It is an arithmetic number, because the mean of its divisors is an integer number (21862512).

Almost surely, 2^120243783 is an apocalyptic number.

120243783 is a deficient number, since it is larger than the sum of its proper divisors (54656313).

120243783 is a wasteful number, since it uses less digits than its factorization.

120243783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3643765.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 120243783 is about 10965.5726252668. The cubic root of 120243783 is about 493.5762003691.

The spelling of 120243783 in words is "one hundred twenty million, two hundred forty-three thousand, seven hundred eighty-three".