11421012042 has 64 divisors (see below), whose sum is σ = 27998524800. Its totient is φ = 3422010240.

The previous prime is 11421012017. The next prime is 11421012077. The reversal of 11421012042 is 24021012411.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55153 + ... + 160884.

It is an arithmetic number, because the mean of its divisors is an integer number (437476950).

Almost surely, 2^11421012042 is an apocalyptic number.

11421012042 is an abundant number, since it is smaller than the sum of its proper divisors (16577512758).

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

11421012042 is a wasteful number, since it uses less digits than its factorization.

11421012042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216148 (or 216142 counting only the distinct ones).

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

Adding to 11421012042 its reverse (24021012411), we get a palindrome (35442024453).

The spelling of 11421012042 in words is "eleven billion, four hundred twenty-one million, twelve thousand, forty-two".