67040442 has 48 divisors (see below), whose sum is σ = 169153920. Its totient is φ = 18791136.

The previous prime is 67040399. The next prime is 67040443. The reversal of 67040442 is 24404076.

It is not an unprimeable number, because it can be changed into a prime (67040443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1659 + ... + 11697.

It is an arithmetic number, because the mean of its divisors is an integer number (3524040).

Almost surely, 2^67040442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67040442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84576960).

67040442 is an abundant number, since it is smaller than the sum of its proper divisors (102113478).

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

67040442 is a wasteful number, since it uses less digits than its factorization.

67040442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10107 (or 10104 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 67040442 is about 8187.8227875303. The cubic root of 67040442 is about 406.2365135720.

The spelling of 67040442 in words is "sixty-seven million, forty thousand, four hundred forty-two".