245142443 has 24 divisors (see below), whose sum is σ = 309636000. Its totient is φ = 193912992.

The previous prime is 245142419. The next prime is 245142449. The reversal of 245142443 is 344241542.

It is not a de Polignac number, because 245142443 - 2⁶ = 245142379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245142449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55853 + ... + 60081.

It is an arithmetic number, because the mean of its divisors is an integer number (12901500).

Almost surely, 2^245142443 is an apocalyptic number.

245142443 is a deficient number, since it is larger than the sum of its proper divisors (64493557).

245142443 is an equidigital number, since it uses as much as digits as its factorization.

245142443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4276 (or 4249 counting only the distinct ones).

The product of its digits is 15360, while the sum is 29.

The square root of 245142443 is about 15657.0253560502. The cubic root of 245142443 is about 625.8537180272.

Adding to 245142443 its reverse (344241542), we get a palindrome (589383985).

Subtracting 245142443 from its reverse (344241542), we obtain a palindrome (99099099).

The spelling of 245142443 in words is "two hundred forty-five million, one hundred forty-two thousand, four hundred forty-three".