2011023030042 has 128 divisors (see below), whose sum is σ = 4872943595520. Its totient is φ = 611059230720.

The previous prime is 2011023030041. The next prime is 2011023030043. The reversal of 2011023030042 is 2400303201102.

2011023030042 is a `hidden beast` number, since 20 + 110 + 230 + 300 + 4 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (2011023030041) and next prime (2011023030043).

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

It is a junction number, because it is equal to n+sod(n) for n = 2011023029997 and 2011023030024.

It is not an unprimeable number, because it can be changed into a prime (2011023030041) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 31359303 + ... + 31423365.

It is an arithmetic number, because the mean of its divisors is an integer number (38069871840).

Almost surely, 2^{2011023030042} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011023030042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2436471797760).

2011023030042 is an abundant number, since it is smaller than the sum of its proper divisors (2861920565478).

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

2011023030042 is a wasteful number, since it uses less digits than its factorization.

2011023030042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64645 (or 64639 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 2011023030042 its reverse (2400303201102), we get a palindrome (4411326231144).

The spelling of 2011023030042 in words is "two trillion, eleven billion, twenty-three million, thirty thousand, forty-two".