1313424242 has 16 divisors (see below), whose sum is σ = 2129583960. Its totient is φ = 603939072.

The previous prime is 1313424241. The next prime is 1313424247. The reversal of 1313424242 is 2424243131.

It can be written as a sum of positive squares in 4 ways, for example, as 482197681 + 831226561 = 21959^2 + 28831^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1313424241) 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, 86903 + ... + 100890.

Almost surely, 2^1313424242 is an apocalyptic number.

1313424242 is a deficient number, since it is larger than the sum of its proper divisors (816159718).

1313424242 is a wasteful number, since it uses less digits than its factorization.

1313424242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188077.

The product of its digits is 4608, while the sum is 26.

The square root of 1313424242 is about 36241.1953721176. The cubic root of 1313424242 is about 1095.1367237518.

Adding to 1313424242 its reverse (2424243131), we get a palindrome (3737667373).

The spelling of 1313424242 in words is "one billion, three hundred thirteen million, four hundred twenty-four thousand, two hundred forty-two".