420887174 has 4 divisors (see below), whose sum is σ = 631330764. Its totient is φ = 210443586.

The previous prime is 420887161. The next prime is 420887177. The reversal of 420887174 is 471788024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420887177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105221792 + ... + 105221795.

It is an arithmetic number, because the mean of its divisors is an integer number (157832691).

Almost surely, 2^420887174 is an apocalyptic number.

420887174 is a deficient number, since it is larger than the sum of its proper divisors (210443590).

420887174 is a wasteful number, since it uses less digits than its factorization.

420887174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210443589.

The product of its (nonzero) digits is 100352, while the sum is 41.

The square root of 420887174 is about 20515.5349430621. The cubic root of 420887174 is about 749.4141641439.

The spelling of 420887174 in words is "four hundred twenty million, eight hundred eighty-seven thousand, one hundred seventy-four".