2001420 has 36 divisors (see below), whose sum is σ = 6071520. Its totient is φ = 533664.

The previous prime is 2001413. The next prime is 2001421. The reversal of 2001420 is 241002.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (2001421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5380 + ... + 5739.

2^2001420 is an apocalyptic number.

2001420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001420 is an abundant number, since it is smaller than the sum of its proper divisors (4070100).

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

2001420 is a wasteful number, since it uses less digits than its factorization.

2001420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11134 (or 11129 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2001420 is about 1414.7155191062. The cubic root of 2001420 is about 126.0219160668.

Adding to 2001420 its reverse (241002), we get a palindrome (2242422).

The spelling of 2001420 in words is "two million, one thousand, four hundred twenty".