2001134542 has 32 divisors (see below), whose sum is σ = 3309512544. Its totient is φ = 907441920.

The previous prime is 2001134539. The next prime is 2001134561. The reversal of 2001134542 is 2454311002.

It is a Harshad number since it is a multiple of its sum of digits (22).

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 15 ways as a sum of consecutive naturals, for example, 1790968 + ... + 1792084.

It is an arithmetic number, because the mean of its divisors is an integer number (103422267).

Almost surely, 2^2001134542 is an apocalyptic number.

2001134542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2001134542 is a deficient number, since it is larger than the sum of its proper divisors (1308378002).

2001134542 is a wasteful number, since it uses less digits than its factorization.

2001134542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825 (or 1803 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2001134542 is about 44734.0423167860. The cubic root of 2001134542 is about 1260.1592437517.

Adding to 2001134542 its reverse (2454311002), we get a palindrome (4455445544).

The spelling of 2001134542 in words is "two billion, one million, one hundred thirty-four thousand, five hundred forty-two".