245204143 has 4 divisors (see below), whose sum is σ = 251831320. Its totient is φ = 238576968.

The previous prime is 245204119. The next prime is 245204147. The reversal of 245204143 is 341402542.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245204143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245204147) 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, 3313533 + ... + 3313606.

It is an arithmetic number, because the mean of its divisors is an integer number (62957830).

Almost surely, 2^245204143 is an apocalyptic number.

245204143 is a deficient number, since it is larger than the sum of its proper divisors (6627177).

245204143 is an equidigital number, since it uses as much as digits as its factorization.

245204143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6627176.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 245204143 is about 15658.9955935877. The cubic root of 245204143 is about 625.9062207473.

Adding to 245204143 its reverse (341402542), we get a palindrome (586606685).

The spelling of 245204143 in words is "two hundred forty-five million, two hundred four thousand, one hundred forty-three".