420614501 has 4 divisors (see below), whose sum is σ = 438902112. Its totient is φ = 402326892.

The previous prime is 420614477. The next prime is 420614567. The reversal of 420614501 is 105416024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420614501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 18287587 = 420614501 / (4 + 2 + 0 + 6 + 1 + 4 + 5 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420610501) 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 3 ways as a sum of consecutive naturals, for example, 9143771 + ... + 9143816.

It is an arithmetic number, because the mean of its divisors is an integer number (109725528).

Almost surely, 2^420614501 is an apocalyptic number.

It is an amenable number.

420614501 is a deficient number, since it is larger than the sum of its proper divisors (18287611).

420614501 is a wasteful number, since it uses less digits than its factorization.

420614501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18287610.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 420614501 is about 20508.8883413997. Note that the first 3 decimals coincide. The cubic root of 420614501 is about 749.2522924552.

The spelling of 420614501 in words is "four hundred twenty million, six hundred fourteen thousand, five hundred one".