245312521042 has 16 divisors (see below), whose sum is σ = 391170571200. Its totient is φ = 115050164400.

The previous prime is 245312521039. The next prime is 245312521043. The reversal of 245312521042 is 240125213542.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 245312520995 and 245312521013.

It is not an unprimeable number, because it can be changed into a prime (245312521043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31954542 + ... + 31962217.

It is an arithmetic number, because the mean of its divisors is an integer number (24448160700).

Almost surely, 2^245312521042 is an apocalyptic number.

245312521042 is a deficient number, since it is larger than the sum of its proper divisors (145858050158).

245312521042 is a wasteful number, since it uses less digits than its factorization.

245312521042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63916881.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 245312521042 its reverse (240125213542), we get a palindrome (485437734584).

The spelling of 245312521042 in words is "two hundred forty-five billion, three hundred twelve million, five hundred twenty-one thousand, forty-two".