245120422243 has 4 divisors (see below), whose sum is σ = 245814814728. Its totient is φ = 244426029760.

The previous prime is 245120422229. The next prime is 245120422333. The reversal of 245120422243 is 342224021542.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245120422243 - 2²¹ = 245118325091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245120422343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347195713 + ... + 347196418.

It is an arithmetic number, because the mean of its divisors is an integer number (61453703682).

Almost surely, 2^245120422243 is an apocalyptic number.

245120422243 is a deficient number, since it is larger than the sum of its proper divisors (694392485).

245120422243 is an equidigital number, since it uses as much as digits as its factorization.

245120422243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694392484.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 245120422243 its reverse (342224021542), we get a palindrome (587344443785).

The spelling of 245120422243 in words is "two hundred forty-five billion, one hundred twenty million, four hundred twenty-two thousand, two hundred forty-three".