245043221240242 has 4 divisors (see below), whose sum is σ = 367564831860366. Its totient is φ = 122521610620120.

The previous prime is 245043221240201. The next prime is 245043221240263. The reversal of 245043221240242 is 242042122340542.

245043221240242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 125489531288521 + 119553689951721 = 11202211^2 + 10934061^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61260805310059 + ... + 61260805310062.

Almost surely, 2^{245043221240242} is an apocalyptic number.

245043221240242 is a deficient number, since it is larger than the sum of its proper divisors (122521610620124).

245043221240242 is a wasteful number, since it uses less digits than its factorization.

245043221240242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122521610620123.

The product of its (nonzero) digits is 245760, while the sum is 37.

Adding to 245043221240242 its reverse (242042122340542), we get a palindrome (487085343580784).

The spelling of 245043221240242 in words is "two hundred forty-five trillion, forty-three billion, two hundred twenty-one million, two hundred forty thousand, two hundred forty-two".