420743555 has 8 divisors (see below), whose sum is σ = 505009392. Its totient is φ = 336516768.

The previous prime is 420743551. The next prime is 420743569. The reversal of 420743555 is 555347024.

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 420743555 - 2² = 420743551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420743551) 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, 25589 + ... + 38681.

It is an arithmetic number, because the mean of its divisors is an integer number (63126174).

Almost surely, 2^420743555 is an apocalyptic number.

420743555 is a deficient number, since it is larger than the sum of its proper divisors (84265837).

420743555 is a wasteful number, since it uses less digits than its factorization.

420743555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19525.

The product of its (nonzero) digits is 84000, while the sum is 35.

The square root of 420743555 is about 20512.0343944719. The cubic root of 420743555 is about 749.3289137775.

The spelling of 420743555 in words is "four hundred twenty million, seven hundred forty-three thousand, five hundred fifty-five".