42666294 has 48 divisors (see below), whose sum is σ = 99341424. Its totient is φ = 12165120.

The previous prime is 42666293. The next prime is 42666313. The reversal of 42666294 is 49266624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42666293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10614 + ... + 14070.

It is an arithmetic number, because the mean of its divisors is an integer number (2069613).

Almost surely, 2^42666294 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42666294, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49670712).

42666294 is an abundant number, since it is smaller than the sum of its proper divisors (56675130).

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

42666294 is a wasteful number, since it uses less digits than its factorization.

42666294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3501 (or 3490 counting only the distinct ones).

The product of its digits is 124416, while the sum is 39.

The square root of 42666294 is about 6531.9441210102. The cubic root of 42666294 is about 349.4311685343.

The spelling of 42666294 in words is "forty-two million, six hundred sixty-six thousand, two hundred ninety-four".