245029121 has 2 divisors, whose sum is σ = 245029122. Its totient is φ = 245029120.

The previous prime is 245029049. The next prime is 245029129. The reversal of 245029121 is 121920542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226924096 + 18105025 = 15064^2 + 4255^2 .

It is a cyclic number.

It is not a de Polignac number, because 245029121 - 2²⁶ = 177920257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245029129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122514560 + 122514561.

It is an arithmetic number, because the mean of its divisors is an integer number (122514561).

Almost surely, 2^245029121 is an apocalyptic number.

It is an amenable number.

245029121 is a deficient number, since it is larger than the sum of its proper divisors (1).

245029121 is an equidigital number, since it uses as much as digits as its factorization.

245029121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 245029121 is about 15653.4060510804. The cubic root of 245029121 is about 625.7572653614.

Adding to 245029121 its reverse (121920542), we get a palindrome (366949663).

The spelling of 245029121 in words is "two hundred forty-five million, twenty-nine thousand, one hundred twenty-one".