40244400242 has 8 divisors (see below), whose sum is σ = 61193540316. Its totient is φ = 19846553472.

The previous prime is 40244400227. The next prime is 40244400247. The reversal of 40244400242 is 24200444204.

It can be written as a sum of positive squares in 2 ways, for example, as 38714104081 + 1530296161 = 196759^2 + 39119^2 .

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

It is a super-2 number, since 2×40244400242² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40244400247) 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, 137823143 + ... + 137823434.

Almost surely, 2^40244400242 is an apocalyptic number.

40244400242 is a deficient number, since it is larger than the sum of its proper divisors (20949140074).

40244400242 is a wasteful number, since it uses less digits than its factorization.

40244400242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275646652.

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 40244400242 its reverse (24200444204), we get a palindrome (64444844446).

The spelling of 40244400242 in words is "forty billion, two hundred forty-four million, four hundred thousand, two hundred forty-two".