12011140242 has 20 divisors (see below), whose sum is σ = 26913851646. Its totient is φ = 4003713360.

The previous prime is 12011140231. The next prime is 12011140261. The reversal of 12011140242 is 24204111021.

It can be written as a sum of positive squares in only one way, i.e., 8558285121 + 3452855121 = 92511^2 + 58761^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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 in 9 ways as a sum of consecutive naturals, for example, 37071259 + ... + 37071582.

Almost surely, 2^12011140242 is an apocalyptic number.

12011140242 is an abundant number, since it is smaller than the sum of its proper divisors (14902711404).

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

12011140242 is an equidigital number, since it uses as much as digits as its factorization.

12011140242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74142855 (or 74142846 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12011140242 its reverse (24204111021), we get a palindrome (36215251263).

The spelling of 12011140242 in words is "twelve billion, eleven million, one hundred forty thousand, two hundred forty-two".