1245510134042 has 4 divisors (see below), whose sum is σ = 1868265201066. Its totient is φ = 622755067020.

The previous prime is 1245510134027. The next prime is 1245510134083. The reversal of 1245510134042 is 2404310155421.

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., 979389308881 + 266120825161 = 989641^2 + 515869^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311377533509 + ... + 311377533512.

Almost surely, 2^{1245510134042} is an apocalyptic number.

1245510134042 is a deficient number, since it is larger than the sum of its proper divisors (622755067024).

1245510134042 is an equidigital number, since it uses as much as digits as its factorization.

1245510134042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622755067023.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 1245510134042 its reverse (2404310155421), we get a palindrome (3649820289463).

The spelling of 1245510134042 in words is "one trillion, two hundred forty-five billion, five hundred ten million, one hundred thirty-four thousand, forty-two".