42531566242 has 16 divisors (see below), whose sum is σ = 69763226400. Its totient is φ = 19286386240.

The previous prime is 42531566219. The next prime is 42531566243. The reversal of 42531566242 is 24266513524.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42531566195 and 42531566204.

It is not an unprimeable number, because it can be changed into a prime (42531566243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2297767 + ... + 2316202.

It is an arithmetic number, because the mean of its divisors is an integer number (4360201650).

Almost surely, 2^42531566242 is an apocalyptic number.

42531566242 is a deficient number, since it is larger than the sum of its proper divisors (27231660158).

42531566242 is a wasteful number, since it uses less digits than its factorization.

42531566242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4614401.

The product of its digits is 345600, while the sum is 40.

The spelling of 42531566242 in words is "forty-two billion, five hundred thirty-one million, five hundred sixty-six thousand, two hundred forty-two".