421243012 has 6 divisors (see below), whose sum is σ = 737175278. Its totient is φ = 210621504.

The previous prime is 421242959. The next prime is 421243013. The reversal of 421243012 is 210342124.

It can be written as a sum of positive squares in only one way, i.e., 300814336 + 120428676 = 17344^2 + 10974^2 .

It is not an unprimeable number, because it can be changed into a prime (421243013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52655373 + ... + 52655380.

Almost surely, 2^421243012 is an apocalyptic number.

It is an amenable number.

421243012 is a deficient number, since it is larger than the sum of its proper divisors (315932266).

421243012 is a wasteful number, since it uses less digits than its factorization.

421243012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105310757 (or 105310755 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 421243012 is about 20524.2055144651. The cubic root of 421243012 is about 749.6253014251.

Adding to 421243012 its reverse (210342124), we get a palindrome (631585136).

The spelling of 421243012 in words is "four hundred twenty-one million, two hundred forty-three thousand, twelve".