42433866 has 12 divisors (see below), whose sum is σ = 91940082. Its totient is φ = 14144616.

The previous prime is 42433861. The next prime is 42433871. The reversal of 42433866 is 66833424.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42433861) and next prime (42433871).

It can be written as a sum of positive squares in only one way, i.e., 29322225 + 13111641 = 5415^2 + 3621^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 42433866.

It is not an unprimeable number, because it can be changed into a prime (42433861) 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, 1178701 + ... + 1178736.

Almost surely, 2^42433866 is an apocalyptic number.

42433866 is an abundant number, since it is smaller than the sum of its proper divisors (49506216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42433866 is a wasteful number, since it uses less digits than its factorization.

42433866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357445 (or 2357442 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 42433866 is about 6514.1281841855. The cubic root of 42433866 is about 348.7954948935.

The spelling of 42433866 in words is "forty-two million, four hundred thirty-three thousand, eight hundred sixty-six".