40424242 has 8 divisors (see below), whose sum is σ = 61099632. Its totient is φ = 20057700.

The previous prime is 40424233. The next prime is 40424243. The reversal of 40424242 is 24242404.

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

It is not an unprimeable number, because it can be changed into a prime (40424243) 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, 76884 + ... + 77407.

It is an arithmetic number, because the mean of its divisors is an integer number (7637454).

Almost surely, 2^40424242 is an apocalyptic number.

40424242 is a deficient number, since it is larger than the sum of its proper divisors (20675390).

40424242 is a wasteful number, since it uses less digits than its factorization.

40424242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154424.

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 40424242 is about 6358.0061340014. The cubic root of 40424242 is about 343.2000125425.

Adding to 40424242 its reverse (24242404), we get a palindrome (64666646).

The spelling of 40424242 in words is "forty million, four hundred twenty-four thousand, two hundred forty-two".