42718157690 has 32 divisors (see below), whose sum is σ = 83411974800. Its totient is φ = 15657721344.

The previous prime is 42718157663. The next prime is 42718157693. The reversal of 42718157690 is 9675181724.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5568293641 + 37149864049 = 74621^2 + 192743^2 .

It is a super-3 number, since 3×42718157690³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42718157693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1181465 + ... + 1217084.

Almost surely, 2^42718157690 is an apocalyptic number.

42718157690 is a deficient number, since it is larger than the sum of its proper divisors (40693817110).

42718157690 is a wasteful number, since it uses less digits than its factorization.

42718157690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398706.

The product of its (nonzero) digits is 846720, while the sum is 50.

The spelling of 42718157690 in words is "forty-two billion, seven hundred eighteen million, one hundred fifty-seven thousand, six hundred ninety".