1245240134738 has 16 divisors (see below), whose sum is σ = 1889041801920. Its totient is φ = 615579066576.

The previous prime is 1245240134711. The next prime is 1245240134741. The reversal of 1245240134738 is 8374310425421.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4755245 + ... + 5010272.

It is an arithmetic number, because the mean of its divisors is an integer number (118065112620).

Almost surely, 2^{1245240134738} is an apocalyptic number.

1245240134738 is a deficient number, since it is larger than the sum of its proper divisors (643801667182).

1245240134738 is a wasteful number, since it uses less digits than its factorization.

1245240134738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9766241.

The product of its (nonzero) digits is 645120, while the sum is 44.

The spelling of 1245240134738 in words is "one trillion, two hundred forty-five billion, two hundred forty million, one hundred thirty-four thousand, seven hundred thirty-eight".