420184071 has 16 divisors (see below), whose sum is σ = 628542720. Its totient is φ = 277401240.

The previous prime is 420184057. The next prime is 420184091. The reversal of 420184071 is 170481024.

It is not a de Polignac number, because 420184071 - 2⁶ = 420184007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420184091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72765 + ... + 78326.

It is an arithmetic number, because the mean of its divisors is an integer number (39283920).

Almost surely, 2^420184071 is an apocalyptic number.

420184071 is a deficient number, since it is larger than the sum of its proper divisors (208358649).

420184071 is a wasteful number, since it uses less digits than its factorization.

420184071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151203 (or 151197 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 420184071 is about 20498.3919125379. The cubic root of 420184071 is about 748.9966262534.

The spelling of 420184071 in words is "four hundred twenty million, one hundred eighty-four thousand, seventy-one".