11400240042 has 12 divisors (see below), whose sum is σ = 24700520130. Its totient is φ = 3800080008.

The previous prime is 11400240037. The next prime is 11400240043. The reversal of 11400240042 is 24004200411.

It can be written as a sum of positive squares in only one way, i.e., 11312236881 + 88003161 = 106359^2 + 9381^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 633346669 = 11400240042 / (1 + 1 + 4 + 0 + 0 + 2 + 4 + 0 + 0 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 11400239997 and 11400240024.

It is not an unprimeable number, because it can be changed into a prime (11400240043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 316673317 + ... + 316673352.

Almost surely, 2^11400240042 is an apocalyptic number.

11400240042 is an abundant number, since it is smaller than the sum of its proper divisors (13300280088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11400240042 is a wasteful number, since it uses less digits than its factorization.

11400240042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633346677 (or 633346674 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 11400240042 its reverse (24004200411), we get a palindrome (35404440453).

The spelling of 11400240042 in words is "eleven billion, four hundred million, two hundred forty thousand, forty-two".