245023251140242 has 4 divisors (see below), whose sum is σ = 367534876710366. Its totient is φ = 122511625570120.

The previous prime is 245023251140219. The next prime is 245023251140281. The reversal of 245023251140242 is 242041152320542.

It is a happy number.

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., 191418874247241 + 53604376893001 = 13835421^2 + 7321501^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61255812785059 + ... + 61255812785062.

Almost surely, 2^{245023251140242} is an apocalyptic number.

245023251140242 is a deficient number, since it is larger than the sum of its proper divisors (122511625570124).

245023251140242 is a wasteful number, since it uses less digits than its factorization.

245023251140242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122511625570123.

The product of its (nonzero) digits is 153600, while the sum is 37.

The spelling of 245023251140242 in words is "two hundred forty-five trillion, twenty-three billion, two hundred fifty-one million, one hundred forty thousand, two hundred forty-two".