420155087 has 8 divisors (see below), whose sum is σ = 459715152. Its totient is φ = 380822400.

The previous prime is 420155063. The next prime is 420155093. The reversal of 420155087 is 780551024.

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 420155087 - 2⁶ = 420155023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420155587) 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, 52964 + ... + 60377.

It is an arithmetic number, because the mean of its divisors is an integer number (57464394).

Almost surely, 2^420155087 is an apocalyptic number.

420155087 is a deficient number, since it is larger than the sum of its proper divisors (39560065).

420155087 is a wasteful number, since it uses less digits than its factorization.

420155087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113689.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 420155087 is about 20497.6849180584. The cubic root of 420155087 is about 748.9794041050.

The spelling of 420155087 in words is "four hundred twenty million, one hundred fifty-five thousand, eighty-seven".