40002242 has 8 divisors (see below), whose sum is σ = 68575296. Its totient is φ = 17143812.

The previous prime is 40002233. The next prime is 40002247. The reversal of 40002242 is 24220004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (14), and also a Moran number because the ratio is a prime number: 2857303 = 40002242 / (4 + 0 + 0 + 0 + 2 + 2 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (40002247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1428638 + ... + 1428665.

It is an arithmetic number, because the mean of its divisors is an integer number (8571912).

Almost surely, 2^40002242 is an apocalyptic number.

40002242 is a deficient number, since it is larger than the sum of its proper divisors (28573054).

40002242 is a wasteful number, since it uses less digits than its factorization.

40002242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857312.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 40002242 is about 6324.7325635160. The cubic root of 40002242 is about 342.0015788261.

Adding to 40002242 its reverse (24220004), we get a palindrome (64222246).

The spelling of 40002242 in words is "forty million, two thousand, two hundred forty-two".