42143696242 has 4 divisors (see below), whose sum is σ = 63215544366. Its totient is φ = 21071848120.

The previous prime is 42143696227. The next prime is 42143696267. The reversal of 42143696242 is 24269634124.

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

It can be written as a sum of positive squares in only one way, i.e., 23886011601 + 18257684641 = 154551^2 + 135121^2 .

It is a super-2 number, since 2×42143696242² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10535924059 + ... + 10535924062.

Almost surely, 2^42143696242 is an apocalyptic number.

42143696242 is a deficient number, since it is larger than the sum of its proper divisors (21071848124).

42143696242 is a wasteful number, since it uses less digits than its factorization.

42143696242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21071848123.

The product of its digits is 497664, while the sum is 43.

The spelling of 42143696242 in words is "forty-two billion, one hundred forty-three million, six hundred ninety-six thousand, two hundred forty-two".