1315250042 has 4 divisors (see below), whose sum is σ = 1972875066. Its totient is φ = 657625020.

The previous prime is 1315250039. The next prime is 1315250093. The reversal of 1315250042 is 2400525131.

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., 1057615441 + 257634601 = 32521^2 + 16051^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328812509 + ... + 328812512.

Almost surely, 2^1315250042 is an apocalyptic number.

1315250042 is a deficient number, since it is larger than the sum of its proper divisors (657625024).

1315250042 is an equidigital number, since it uses as much as digits as its factorization.

1315250042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657625023.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1315250042 is about 36266.3761906259. The cubic root of 1315250042 is about 1095.6439411395.

Adding to 1315250042 its reverse (2400525131), we get a palindrome (3715775173).

The spelling of 1315250042 in words is "one billion, three hundred fifteen million, two hundred fifty thousand, forty-two".