2011503042 has 24 divisors (see below), whose sum is σ = 4547746944. Its totient is φ = 641348664.

The previous prime is 2011502993. The next prime is 2011503083. The reversal of 2011503042 is 2403051102.

It is a super-2 number, since 2×2011503042² = 8092288975950507528, which contains 22 as substring.

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 (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2428938 + ... + 2429765.

It is an arithmetic number, because the mean of its divisors is an integer number (189489456).

Almost surely, 2^2011503042 is an apocalyptic number.

2011503042 is an abundant number, since it is smaller than the sum of its proper divisors (2536243902).

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

2011503042 is a wasteful number, since it uses less digits than its factorization.

2011503042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4858734 (or 4858731 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2011503042 is about 44849.7830763985. The cubic root of 2011503042 is about 1262.3319211855.

Adding to 2011503042 its reverse (2403051102), we get a palindrome (4414554144).

The spelling of 2011503042 in words is "two billion, eleven million, five hundred three thousand, forty-two".