245640122 has 16 divisors (see below), whose sum is σ = 453489792. Its totient is φ = 97176240.

The previous prime is 245640079. The next prime is 245640139. The reversal of 245640122 is 221046542.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 245640091 and 245640100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674654 + ... + 675017.

It is an arithmetic number, because the mean of its divisors is an integer number (28343112).

Almost surely, 2^245640122 is an apocalyptic number.

245640122 is a deficient number, since it is larger than the sum of its proper divisors (207849670).

245640122 is a wasteful number, since it uses less digits than its factorization.

245640122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349693.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 245640122 is about 15672.9104508384. The cubic root of 245640122 is about 626.2769599936.

Adding to 245640122 its reverse (221046542), we get a palindrome (466686664).

The spelling of 245640122 in words is "two hundred forty-five million, six hundred forty thousand, one hundred twenty-two".