245122505402 has 8 divisors (see below), whose sum is σ = 389312214516. Its totient is φ = 115351767232.

The previous prime is 245122505389. The next prime is 245122505461. The reversal of 245122505402 is 204505221542.

It can be written as a sum of positive squares in 2 ways, for example, as 242230324561 + 2892180841 = 492169^2 + 53779^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3604742693 + ... + 3604742760.

Almost surely, 2^245122505402 is an apocalyptic number.

245122505402 is a deficient number, since it is larger than the sum of its proper divisors (144189709114).

245122505402 is a wasteful number, since it uses less digits than its factorization.

245122505402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7209485472.

The product of its (nonzero) digits is 32000, while the sum is 32.

Adding to 245122505402 its reverse (204505221542), we get a palindrome (449627726944).

The spelling of 245122505402 in words is "two hundred forty-five billion, one hundred twenty-two million, five hundred five thousand, four hundred two".