42020166466 has 8 divisors (see below), whose sum is σ = 66737911500. Its totient is φ = 19774195968.

The previous prime is 42020166451. The next prime is 42020166467. The reversal of 42020166466 is 66466102024.

It can be written as a sum of positive squares in 2 ways, for example, as 40795516441 + 1224650025 = 201979^2 + 34995^2 .

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

It is not an unprimeable number, because it can be changed into a prime (42020166467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 617943591 + ... + 617943658.

Almost surely, 2^42020166466 is an apocalyptic number.

42020166466 is a deficient number, since it is larger than the sum of its proper divisors (24717745034).

42020166466 is a wasteful number, since it uses less digits than its factorization.

42020166466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235887268.

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 42020166466 in words is "forty-two billion, twenty million, one hundred sixty-six thousand, four hundred sixty-six".