421175420 has 24 divisors (see below), whose sum is σ = 889588224. Its totient is φ = 167494976.

The previous prime is 421175399. The next prime is 421175423. The reversal of 421175420 is 24571124.

It is a self number, because there is not a number n which added to its sum of digits gives 421175420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421175423) 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 in 7 ways as a sum of consecutive naturals, for example, 57404 + ... + 64323.

It is an arithmetic number, because the mean of its divisors is an integer number (37066176).

Almost surely, 2^421175420 is an apocalyptic number.

It is an amenable number.

421175420 is an abundant number, since it is smaller than the sum of its proper divisors (468412804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421175420 is a wasteful number, since it uses less digits than its factorization.

421175420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121909 (or 121907 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 421175420 is about 20522.5588073222. The cubic root of 421175420 is about 749.5852047095.

The spelling of 421175420 in words is "four hundred twenty-one million, one hundred seventy-five thousand, four hundred twenty".