421221124 has 6 divisors (see below), whose sum is σ = 737136974. Its totient is φ = 210610560.

The previous prime is 421221107. The next prime is 421221131. The reversal of 421221124 is 421122124.

It can be written as a sum of positive squares in only one way, i.e., 416894724 + 4326400 = 20418^2 + 2080^2 .

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52652637 + ... + 52652644.

Almost surely, 2^421221124 is an apocalyptic number.

It is an amenable number.

421221124 is a deficient number, since it is larger than the sum of its proper divisors (315915850).

421221124 is a wasteful number, since it uses less digits than its factorization.

421221124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105305285 (or 105305283 counting only the distinct ones).

The product of its digits is 256, while the sum is 19.

The square root of 421221124 is about 20523.6722834877. The cubic root of 421221124 is about 749.6123175636.

Adding to 421221124 its reverse (421122124), we get a palindrome (842343248).

The spelling of 421221124 in words is "four hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty-four".