1243514206542 has 16 divisors (see below), whose sum is σ = 2516992611840. Its totient is φ = 409510702392.

The previous prime is 1243514206481. The next prime is 1243514206567. The reversal of 1243514206542 is 2456024153421.

It is a self number, because there is not a number n which added to its sum of digits gives 1243514206542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1248507742 + ... + 1248508737.

It is an arithmetic number, because the mean of its divisors is an integer number (157312038240).

Almost surely, 2^{1243514206542} is an apocalyptic number.

1243514206542 is an abundant number, since it is smaller than the sum of its proper divisors (1273478405298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243514206542 is a wasteful number, since it uses less digits than its factorization.

1243514206542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497016567.

The product of its (nonzero) digits is 230400, while the sum is 39.

Adding to 1243514206542 its reverse (2456024153421), we get a palindrome (3699538359963).

The spelling of 1243514206542 in words is "one trillion, two hundred forty-three billion, five hundred fourteen million, two hundred six thousand, five hundred forty-two".