245121143 has 12 divisors (see below), whose sum is σ = 256999008. Its totient is φ = 233772000.

The previous prime is 245121133. The next prime is 245121167. The reversal of 245121143 is 341121542.

245121143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 245121143 - 2¹⁰ = 245120119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245121103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 326018 + ... + 326768.

It is an arithmetic number, because the mean of its divisors is an integer number (21416584).

Almost surely, 2^245121143 is an apocalyptic number.

245121143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

245121143 is a deficient number, since it is larger than the sum of its proper divisors (11877865).

245121143 is an equidigital number, since it uses as much as digits as its factorization.

245121143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414 (or 1391 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 245121143 is about 15656.3451354395. The cubic root of 245121143 is about 625.8355910556.

Adding to 245121143 its reverse (341121542), we get a palindrome (586242685).

The spelling of 245121143 in words is "two hundred forty-five million, one hundred twenty-one thousand, one hundred forty-three".