40302242 has 10 divisors (see below), whose sum is σ = 61369323. Its totient is φ = 19850358.

The previous prime is 40302217. The next prime is 40302247. The reversal of 40302242 is 24220304.

It can be written as a sum of positive squares in only one way, i.e., 20151121 + 20151121 = 4489^2 + 4489^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=4489.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40302242.

It is not an unprimeable number, because it can be changed into a prime (40302247) by changing a digit.

It is a polite number, since it can be written in 4 ways as a sum of consecutive naturals, for example, 601493 + ... + 601559.

Almost surely, 2^40302242 is an apocalyptic number.

40302242 is a deficient number, since it is larger than the sum of its proper divisors (21067081).

40302242 is an frugal number, since it uses more digits than its factorization.

40302242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 40302242 is about 6348.4046814928. The cubic root of 40302242 is about 342.8544064431.

Adding to 40302242 its reverse (24220304), we get a palindrome (64522546).

The spelling of 40302242 in words is "forty million, three hundred two thousand, two hundred forty-two".