2001542027 has 4 divisors (see below), whose sum is σ = 2048089560. Its totient is φ = 1954994496.

The previous prime is 2001542017. The next prime is 2001542051. The reversal of 2001542027 is 7202451002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2001542027 - 2⁶ = 2001541963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001541993 and 2001542011.

It is not an unprimeable number, because it can be changed into a prime (2001542017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23273702 + ... + 23273787.

It is an arithmetic number, because the mean of its divisors is an integer number (512022390).

Almost surely, 2^2001542027 is an apocalyptic number.

2001542027 is a deficient number, since it is larger than the sum of its proper divisors (46547533).

2001542027 is an equidigital number, since it uses as much as digits as its factorization.

2001542027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46547532.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 2001542027 is about 44738.5966141094. The cubic root of 2001542027 is about 1260.2447720905.

Adding to 2001542027 its reverse (7202451002), we get a palindrome (9203993029).

The spelling of 2001542027 in words is "two billion, one million, five hundred forty-two thousand, twenty-seven".