420660241 has 8 divisors (see below), whose sum is σ = 424939104. Its totient is φ = 416391360.

The previous prime is 420660239. The next prime is 420660259. The reversal of 420660241 is 142066024.

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 420660241 - 2¹ = 420660239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420660211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105046 + ... + 108976.

It is an arithmetic number, because the mean of its divisors is an integer number (53117388).

Almost surely, 2^420660241 is an apocalyptic number.

It is an amenable number.

420660241 is a deficient number, since it is larger than the sum of its proper divisors (4278863).

420660241 is a wasteful number, since it uses less digits than its factorization.

420660241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4991.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 420660241 is about 20510.0034373473. The cubic root of 420660241 is about 749.2794507816.

The spelling of 420660241 in words is "four hundred twenty million, six hundred sixty thousand, two hundred forty-one".