210421412 has 6 divisors (see below), whose sum is σ = 368237478. Its totient is φ = 105210704.

The previous prime is 210421363. The next prime is 210421417. The reversal of 210421412 is 214124012.

It can be written as a sum of positive squares in only one way, i.e., 147282496 + 63138916 = 12136^2 + 7946^2 .

It is not an unprimeable number, because it can be changed into a prime (210421417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26302673 + ... + 26302680.

It is an arithmetic number, because the mean of its divisors is an integer number (61372913).

Almost surely, 2^210421412 is an apocalyptic number.

It is an amenable number.

210421412 is a deficient number, since it is larger than the sum of its proper divisors (157816066).

210421412 is a wasteful number, since it uses less digits than its factorization.

210421412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52605357 (or 52605355 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 210421412 is about 14505.9095543851. The cubic root of 210421412 is about 594.7895232757.

Adding to 210421412 its reverse (214124012), we get a palindrome (424545424).

The spelling of 210421412 in words is "two hundred ten million, four hundred twenty-one thousand, four hundred twelve".