1245311342542 has 8 divisors (see below), whose sum is σ = 1867976167032. Its totient is φ = 622652620200.

The previous prime is 1245311342497. The next prime is 1245311342563. The reversal of 1245311342542 is 2452431135421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 975709 + ... + 1855432.

It is an arithmetic number, because the mean of its divisors is an integer number (233497020879).

Almost surely, 2^{1245311342542} is an apocalyptic number.

1245311342542 is a deficient number, since it is larger than the sum of its proper divisors (622664824490).

1245311342542 is a wasteful number, since it uses less digits than its factorization.

1245311342542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3051074.

The product of its digits is 115200, while the sum is 37.

Adding to 1245311342542 its reverse (2452431135421), we get a palindrome (3697742477963).

It can be divided in two parts, 12453 and 11342542, that added together give a triangular number (11354995 = T₄₇₆₅).

The spelling of 1245311342542 in words is "one trillion, two hundred forty-five billion, three hundred eleven million, three hundred forty-two thousand, five hundred forty-two".