2001642 has 16 divisors (see below), whose sum is σ = 4017600. Its totient is φ = 664832.

The previous prime is 2001641. The next prime is 2001653. The reversal of 2001642 is 2461002.

It is a super-3 number, since 3×2001642³ = 24059160544233303864, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2001641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2323 + ... + 3065.

It is an arithmetic number, because the mean of its divisors is an integer number (251100).

2^2001642 is an apocalyptic number.

2001642 is an abundant number, since it is smaller than the sum of its proper divisors (2015958).

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

2001642 is a wasteful number, since it uses less digits than its factorization.

2001642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2001642 is about 1414.7939779346. The cubic root of 2001642 is about 126.0265753972.

Adding to 2001642 its reverse (2461002), we get a palindrome (4462644).

The spelling of 2001642 in words is "two million, one thousand, six hundred forty-two".