40709242 has 8 divisors (see below), whose sum is σ = 69787296. Its totient is φ = 17446812.

The previous prime is 40709219. The next prime is 40709329. The reversal of 40709242 is 24290704.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40709242.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1453888 + ... + 1453915.

It is an arithmetic number, because the mean of its divisors is an integer number (8723412).

Almost surely, 2^40709242 is an apocalyptic number.

40709242 is a deficient number, since it is larger than the sum of its proper divisors (29078054).

40709242 is a wasteful number, since it uses less digits than its factorization.

40709242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907812.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 40709242 is about 6380.3794558004. The cubic root of 40709242 is about 344.0046702539.

Adding to 40709242 its reverse (24290704), we get a palindrome (64999946).

The spelling of 40709242 in words is "forty million, seven hundred nine thousand, two hundred forty-two".