142421405430542 has 16 divisors (see below), whose sum is σ = 244251744717312. Its totient is φ = 61012554189720.

The previous prime is 142421405430533. The next prime is 142421405430613. The reversal of 142421405430542 is 245034504124241.

It is a self number, because there is not a number n which added to its sum of digits gives 142421405430542.

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, 2099214434 + ... + 2099282277.

It is an arithmetic number, because the mean of its divisors is an integer number (15265734044832).

Almost surely, 2^{142421405430542} is an apocalyptic number.

142421405430542 is a deficient number, since it is larger than the sum of its proper divisors (101830339286770).

142421405430542 is a wasteful number, since it uses less digits than its factorization.

142421405430542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4198499143.

The product of its (nonzero) digits is 614400, while the sum is 41.

Adding to 142421405430542 its reverse (245034504124241), we get a palindrome (387455909554783).

The spelling of 142421405430542 in words is "one hundred forty-two trillion, four hundred twenty-one billion, four hundred five million, four hundred thirty thousand, five hundred forty-two".