420401065 has 8 divisors (see below), whose sum is σ = 576550080. Its totient is φ = 288274992.

The previous prime is 420401057. The next prime is 420401071. The reversal of 420401065 is 560104024.

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 420401065 - 2³ = 420401057 is a prime.

It is a super-3 number, since 3×420401065³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6005695 + ... + 6005764.

It is an arithmetic number, because the mean of its divisors is an integer number (72068760).

Almost surely, 2^420401065 is an apocalyptic number.

It is an amenable number.

420401065 is a deficient number, since it is larger than the sum of its proper divisors (156149015).

420401065 is a wasteful number, since it uses less digits than its factorization.

420401065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12011471.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 420401065 is about 20503.6841811417. The cubic root of 420401065 is about 749.1255378546.

Adding to 420401065 its reverse (560104024), we get a palindrome (980505089).

The spelling of 420401065 in words is "four hundred twenty million, four hundred one thousand, sixty-five".