420355555 has 8 divisors (see below), whose sum is σ = 505253232. Its totient is φ = 335733408.

The previous prime is 420355553. The next prime is 420355619. The reversal of 420355555 is 555553024.

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 420355555 - 2¹ = 420355553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420355555.

It is not an unprimeable number, because it can be changed into a prime (420355553) 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, 65509 + ... + 71638.

It is an arithmetic number, because the mean of its divisors is an integer number (63156654).

Almost surely, 2^420355555 is an apocalyptic number.

420355555 is a deficient number, since it is larger than the sum of its proper divisors (84897677).

420355555 is a wasteful number, since it uses less digits than its factorization.

420355555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137765.

The product of its (nonzero) digits is 75000, while the sum is 34.

The square root of 420355555 is about 20502.5743505541. The cubic root of 420355555 is about 749.0985049913.

The spelling of 420355555 in words is "four hundred twenty million, three hundred fifty-five thousand, five hundred fifty-five".