64240242 has 64 divisors (see below), whose sum is σ = 148055040. Its totient is φ = 18392000.

The previous prime is 64240223. The next prime is 64240247. The reversal of 64240242 is 24204246.

It is not an unprimeable number, because it can be changed into a prime (64240247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153109 + ... + 153527.

It is an arithmetic number, because the mean of its divisors is an integer number (2313360).

Almost surely, 2^64240242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64240242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74027520).

64240242 is an abundant number, since it is smaller than the sum of its proper divisors (83814798).

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

64240242 is a wasteful number, since it uses less digits than its factorization.

64240242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 64240242 is about 8015.0010605115. The cubic root of 64240242 is about 400.4998792084.

Adding to 64240242 its reverse (24204246), we get a palindrome (88444488).

The spelling of 64240242 in words is "sixty-four million, two hundred forty thousand, two hundred forty-two".