2001547042 has 16 divisors (see below), whose sum is σ = 3363780672. Its totient is φ = 885204720.

The previous prime is 2001547021. The next prime is 2001547057. The reversal of 2001547042 is 2407451002.

It is a super-2 number, since 2×2001547042² = 8012381122677899528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2001546998 and 2001547016.

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 7 ways as a sum of consecutive naturals, for example, 1228638 + ... + 1230265.

It is an arithmetic number, because the mean of its divisors is an integer number (210236292).

Almost surely, 2^2001547042 is an apocalyptic number.

2001547042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2001547042 is a deficient number, since it is larger than the sum of its proper divisors (1362233630).

2001547042 is a wasteful number, since it uses less digits than its factorization.

2001547042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458953.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 2001547042 is about 44738.6526618762. The cubic root of 2001547042 is about 1260.2458246327.

Adding to 2001547042 its reverse (2407451002), we get a palindrome (4408998044).

The spelling of 2001547042 in words is "two billion, one million, five hundred forty-seven thousand, forty-two".