420597261 has 24 divisors (see below), whose sum is σ = 699401664. Its totient is φ = 238582080.

The previous prime is 420597259. The next prime is 420597263. The reversal of 420597261 is 162795024.

420597261 is a `hidden beast` number, since 4 + 2 + 0 + 597 + 2 + 61 = 666.

It is an interprime number because it is at equal distance from previous prime (420597259) and next prime (420597263).

It is not a de Polignac number, because 420597261 - 2¹ = 420597259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420597263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15735 + ... + 32996.

It is an arithmetic number, because the mean of its divisors is an integer number (29141736).

Almost surely, 2^420597261 is an apocalyptic number.

It is an amenable number.

420597261 is a deficient number, since it is larger than the sum of its proper divisors (278804403).

420597261 is a wasteful number, since it uses less digits than its factorization.

420597261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48881 (or 48878 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 420597261 is about 20508.4680315230. The cubic root of 420597261 is about 749.2420556184.

The spelling of 420597261 in words is "four hundred twenty million, five hundred ninety-seven thousand, two hundred sixty-one".