2001420345 has 16 divisors (see below), whose sum is σ = 3205593792. Its totient is φ = 1066317120.

The previous prime is 2001420241. The next prime is 2001420373. The reversal of 2001420345 is 5430241002.

It is a de Polignac number, because none of the positive numbers 2^k-2001420345 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54142 + ... + 83271.

It is an arithmetic number, because the mean of its divisors is an integer number (200349612).

Almost surely, 2^2001420345 is an apocalyptic number.

It is an amenable number.

2001420345 is a deficient number, since it is larger than the sum of its proper divisors (1204173447).

2001420345 is a wasteful number, since it uses less digits than its factorization.

2001420345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138392.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 2001420345 is about 44737.2366714798. The cubic root of 2001420345 is about 1260.2192330794.

Adding to 2001420345 its reverse (5430241002), we get a palindrome (7431661347).

The spelling of 2001420345 in words is "two billion, one million, four hundred twenty thousand, three hundred forty-five".