11421819042 has 32 divisors (see below), whose sum is σ = 22996455552. Its totient is φ = 3781835904.

The previous prime is 11421819023. The next prime is 11421819043. The reversal of 11421819042 is 24091812411.

It is a junction number, because it is equal to n+sod(n) for n = 11421818994 and 11421819012.

It is not an unprimeable number, because it can be changed into a prime (11421819043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1877718 + ... + 1883790.

It is an arithmetic number, because the mean of its divisors is an integer number (718639236).

Almost surely, 2^11421819042 is an apocalyptic number.

11421819042 is an abundant number, since it is smaller than the sum of its proper divisors (11574636510).

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

11421819042 is a wasteful number, since it uses less digits than its factorization.

11421819042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8122.

The product of its (nonzero) digits is 4608, while the sum is 33.

The spelling of 11421819042 in words is "eleven billion, four hundred twenty-one million, eight hundred nineteen thousand, forty-two".