421220132 has 6 divisors (see below), whose sum is σ = 737135238. Its totient is φ = 210610064.

The previous prime is 421220113. The next prime is 421220161. The reversal of 421220132 is 231022124.

It can be written as a sum of positive squares in only one way, i.e., 327827236 + 93392896 = 18106^2 + 9664^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 421220132.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52652513 + ... + 52652520.

It is an arithmetic number, because the mean of its divisors is an integer number (122855873).

Almost surely, 2^421220132 is an apocalyptic number.

It is an amenable number.

421220132 is a deficient number, since it is larger than the sum of its proper divisors (315915106).

421220132 is a wasteful number, since it uses less digits than its factorization.

421220132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105305037 (or 105305035 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 421220132 is about 20523.6481162585. The cubic root of 421220132 is about 749.6117291030.

Adding to 421220132 its reverse (231022124), we get a palindrome (652242256).

The spelling of 421220132 in words is "four hundred twenty-one million, two hundred twenty thousand, one hundred thirty-two".