143542640242 has 8 divisors (see below), whose sum is σ = 215349691500. Its totient is φ = 71759409744.

The previous prime is 143542640233. The next prime is 143542640309. The reversal of 143542640242 is 242046245341.

It can be written as a sum of positive squares in 2 ways, for example, as 91827786961 + 51714853281 = 303031^2 + 227409^2 .

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

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, 5940117 + ... + 5964232.

Almost surely, 2^143542640242 is an apocalyptic number.

143542640242 is a deficient number, since it is larger than the sum of its proper divisors (71807051258).

143542640242 is a wasteful number, since it uses less digits than its factorization.

143542640242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11910380.

The product of its (nonzero) digits is 184320, while the sum is 37.

Adding to 143542640242 its reverse (242046245341), we get a palindrome (385588885583).

The spelling of 143542640242 in words is "one hundred forty-three billion, five hundred forty-two million, six hundred forty thousand, two hundred forty-two".