421292180 has 24 divisors (see below), whose sum is σ = 894657960. Its totient is φ = 166622720.

The previous prime is 421292171. The next prime is 421292189. The reversal of 421292180 is 81292124.

It is an interprime number because it is at equal distance from previous prime (421292171) and next prime (421292189).

It can be written as a sum of positive squares in 4 ways, for example, as 2353156 + 418939024 = 1534^2 + 20468^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421292189) 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, 116561 + ... + 120120.

It is an arithmetic number, because the mean of its divisors is an integer number (37277415).

Almost surely, 2^421292180 is an apocalyptic number.

It is an amenable number.

421292180 is an abundant number, since it is smaller than the sum of its proper divisors (473365780).

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

421292180 is a wasteful number, since it uses less digits than its factorization.

421292180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236779 (or 236777 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 421292180 is about 20525.4032847104. The cubic root of 421292180 is about 749.6544660180.

The spelling of 421292180 in words is "four hundred twenty-one million, two hundred ninety-two thousand, one hundred eighty".