420541555 has 8 divisors (see below), whose sum is σ = 576742752. Its totient is φ = 288371328.

The previous prime is 420541549. The next prime is 420541559. The reversal of 420541555 is 555145024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420541555 - 2⁵ = 420541523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420541559) 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, 6007702 + ... + 6007771.

It is an arithmetic number, because the mean of its divisors is an integer number (72092844).

Almost surely, 2^420541555 is an apocalyptic number.

420541555 is a deficient number, since it is larger than the sum of its proper divisors (156201197).

420541555 is a wasteful number, since it uses less digits than its factorization.

420541555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12015485.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 420541555 is about 20507.1098646299. The cubic root of 420541555 is about 749.2089763725.

Adding to 420541555 its reverse (555145024), we get a palindrome (975686579).

The spelling of 420541555 in words is "four hundred twenty million, five hundred forty-one thousand, five hundred fifty-five".