420020134 has 8 divisors (see below), whose sum is σ = 630516168. Its totient is φ = 209848080.

The previous prime is 420020131. The next prime is 420020149. The reversal of 420020134 is 431020024.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420020131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77727 + ... + 82954.

It is an arithmetic number, because the mean of its divisors is an integer number (78814521).

Almost surely, 2^420020134 is an apocalyptic number.

420020134 is a deficient number, since it is larger than the sum of its proper divisors (210496034).

420020134 is a wasteful number, since it uses less digits than its factorization.

420020134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161990.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 420020134 is about 20494.3927453340. The cubic root of 420020134 is about 748.8992052732.

Adding to 420020134 its reverse (431020024), we get a palindrome (851040158).

The spelling of 420020134 in words is "four hundred twenty million, twenty thousand, one hundred thirty-four".