2400440402242 has 4 divisors (see below), whose sum is σ = 3600660603366. Its totient is φ = 1200220201120.

The previous prime is 2400440402231. The next prime is 2400440402291. The reversal of 2400440402242 is 2422040440042.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1598679543321 + 801760858921 = 1264389^2 + 895411^2 .

It is a super-2 number, since 2×2400440402242² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2400440402242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600110100559 + ... + 600110100562.

Almost surely, 2^{2400440402242} is an apocalyptic number.

2400440402242 is a deficient number, since it is larger than the sum of its proper divisors (1200220201124).

2400440402242 is a wasteful number, since it uses less digits than its factorization.

2400440402242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200220201123.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 2400440402242 its reverse (2422040440042), we get a palindrome (4822480842284).

The spelling of 2400440402242 in words is "two trillion, four hundred billion, four hundred forty million, four hundred two thousand, two hundred forty-two".