142246045442 has 6 divisors (see below), whose sum is σ = 213369868233. Its totient is φ = 71122756032.

The previous prime is 142246045427. The next prime is 142246045451. The reversal of 142246045442 is 244540642241.

142246045442 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 2 ways, for example, as 124214658481 + 18031386961 = 352441^2 + 134281^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=266689.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142246045396 and 142246045405.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 400034 + ... + 666722.

Almost surely, 2^142246045442 is an apocalyptic number.

142246045442 is a deficient number, since it is larger than the sum of its proper divisors (71123822791).

142246045442 is an frugal number, since it uses more digits than its factorization.

142246045442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533380 (or 266691 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 38.

Adding to 142246045442 its reverse (244540642241), we get a palindrome (386786687683).

The spelling of 142246045442 in words is "one hundred forty-two billion, two hundred forty-six million, forty-five thousand, four hundred forty-two".