245242341421 has 16 divisors (see below), whose sum is σ = 305769300480. Its totient is φ = 191090044080.

The previous prime is 245242341389. The next prime is 245242341457. The reversal of 245242341421 is 124143242542.

It is a cyclic number.

It is not a de Polignac number, because 245242341421 - 2⁵ = 245242341389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245242342421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2418870 + ... + 2518216.

It is an arithmetic number, because the mean of its divisors is an integer number (19110581280).

Almost surely, 2^245242341421 is an apocalyptic number.

It is an amenable number.

245242341421 is a deficient number, since it is larger than the sum of its proper divisors (60526959059).

245242341421 is a wasteful number, since it uses less digits than its factorization.

245242341421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131424.

The product of its digits is 61440, while the sum is 34.

Adding to 245242341421 its reverse (124143242542), we get a palindrome (369385583963).

The spelling of 245242341421 in words is "two hundred forty-five billion, two hundred forty-two million, three hundred forty-one thousand, four hundred twenty-one".