2040420401 has 2 divisors, whose sum is σ = 2040420402. Its totient is φ = 2040420400.

The previous prime is 2040420383. The next prime is 2040420407. The reversal of 2040420401 is 1040240402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1957974001 + 82446400 = 44249^2 + 9080^2 .

It is a cyclic number.

It is not a de Polignac number, because 2040420401 - 2¹⁰ = 2040419377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2040420401.

It is not a weakly prime, because it can be changed into another prime (2040420407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020210200 + 1020210201.

It is an arithmetic number, because the mean of its divisors is an integer number (1020210201).

Almost surely, 2^2040420401 is an apocalyptic number.

It is an amenable number.

2040420401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040420401 is an equidigital number, since it uses as much as digits as its factorization.

2040420401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2040420401 is about 45171.0128400947. The cubic root of 2040420401 is about 1268.3522559973.

Adding to 2040420401 its reverse (1040240402), we get a palindrome (3080660803).

The spelling of 2040420401 in words is "two billion, forty million, four hundred twenty thousand, four hundred one".