420456061 has 4 divisors (see below), whose sum is σ = 420497500. Its totient is φ = 420414624.

The previous prime is 420456059. The next prime is 420456089. The reversal of 420456061 is 160654024.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 16687225 + 403768836 = 4085^2 + 20094^2 .

It is a cyclic number.

It is not a de Polignac number, because 420456061 - 2¹ = 420456059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420456011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5905 + ... + 29593.

It is an arithmetic number, because the mean of its divisors is an integer number (105124375).

Almost surely, 2^420456061 is an apocalyptic number.

It is an amenable number.

420456061 is a deficient number, since it is larger than the sum of its proper divisors (41439).

420456061 is a wasteful number, since it uses less digits than its factorization.

420456061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41438.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 420456061 is about 20505.0252621156. The cubic root of 420456061 is about 749.1582027827.

The spelling of 420456061 in words is "four hundred twenty million, four hundred fifty-six thousand, sixty-one".