242142541405442 has 4 divisors (see below), whose sum is σ = 363213812108166. Its totient is φ = 121071270702720.

The previous prime is 242142541405421. The next prime is 242142541405463. The reversal of 242142541405442 is 244504145241242.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (242142541405421) and next prime (242142541405463).

It can be written as a sum of positive squares in only one way, i.e., 211416572709241 + 30725968696201 = 14540171^2 + 5543101^2 .

It is a junction number, because it is equal to n+sod(n) for n = 242142541405393 and 242142541405402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60535635351359 + ... + 60535635351362.

Almost surely, 2^{242142541405442} is an apocalyptic number.

242142541405442 is a deficient number, since it is larger than the sum of its proper divisors (121071270702724).

242142541405442 is a wasteful number, since it uses less digits than its factorization.

242142541405442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121071270702723.

The product of its (nonzero) digits is 1638400, while the sum is 44.

Adding to 242142541405442 its reverse (244504145241242), we get a palindrome (486646686646684).

The spelling of 242142541405442 in words is "two hundred forty-two trillion, one hundred forty-two billion, five hundred forty-one million, four hundred five thousand, four hundred forty-two".