245140242 has 16 divisors (see below), whose sum is σ = 516084960. Its totient is φ = 77412672.

The previous prime is 245140241. The next prime is 245140249. The reversal of 245140242 is 242041542.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (245140241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1075063 + ... + 1075290.

It is an arithmetic number, because the mean of its divisors is an integer number (32255310).

Almost surely, 2^245140242 is an apocalyptic number.

245140242 is an abundant number, since it is smaller than the sum of its proper divisors (270944718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245140242 is a wasteful number, since it uses less digits than its factorization.

245140242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150377.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 245140242 is about 15656.9550679562. The cubic root of 245140242 is about 625.8518449555.

Adding to 245140242 its reverse (242041542), we get a palindrome (487181784).

The spelling of 245140242 in words is "two hundred forty-five million, one hundred forty thousand, two hundred forty-two".