420743401 has 8 divisors (see below), whose sum is σ = 453354440. Its totient is φ = 388167552.

The previous prime is 420743371. The next prime is 420743437. The reversal of 420743401 is 104347024.

It can be written as a sum of positive squares in 4 ways, for example, as 7027801 + 413715600 = 2651^2 + 20340^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420743401 - 2⁷ = 420743273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420743461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19411 + ... + 34903.

It is an arithmetic number, because the mean of its divisors is an integer number (56669305).

Almost surely, 2^420743401 is an apocalyptic number.

It is an amenable number.

420743401 is a deficient number, since it is larger than the sum of its proper divisors (32611039).

420743401 is a wasteful number, since it uses less digits than its factorization.

420743401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17595.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 420743401 is about 20512.0306405777. The cubic root of 420743401 is about 749.3288223547.

The spelling of 420743401 in words is "four hundred twenty million, seven hundred forty-three thousand, four hundred one".