42143534450 has 12 divisors (see below), whose sum is σ = 78386974170. Its totient is φ = 16857413760.

The previous prime is 42143534371. The next prime is 42143534453. The reversal of 42143534450 is 5443534124.

It can be written as a sum of positive squares in 3 ways, for example, as 38146386721 + 3997147729 = 195311^2 + 63223^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42143534450.

It is not an unprimeable number, because it can be changed into a prime (42143534453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 421435295 + ... + 421435394.

Almost surely, 2^42143534450 is an apocalyptic number.

42143534450 is a deficient number, since it is larger than the sum of its proper divisors (36243439720).

42143534450 is a wasteful number, since it uses less digits than its factorization.

42143534450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842870701 (or 842870696 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

The spelling of 42143534450 in words is "forty-two billion, one hundred forty-three million, five hundred thirty-four thousand, four hundred fifty".