11212420142 has 64 divisors (see below), whose sum is σ = 22743866880. Its totient is φ = 4011187200.

The previous prime is 11212420139. The next prime is 11212420189. The reversal of 11212420142 is 24102421211.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 55109 + ... + 159567.

It is an arithmetic number, because the mean of its divisors is an integer number (355372920).

Almost surely, 2^11212420142 is an apocalyptic number.

11212420142 is an abundant number, since it is smaller than the sum of its proper divisors (11531446738).

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

11212420142 is a wasteful number, since it uses less digits than its factorization.

11212420142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104537.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 11212420142 its reverse (24102421211), we get a palindrome (35314841353).

The spelling of 11212420142 in words is "eleven billion, two hundred twelve million, four hundred twenty thousand, one hundred forty-two".