1412420021 has 4 divisors (see below), whose sum is σ = 1421899500. Its totient is φ = 1402940544.

The previous prime is 1412420003. The next prime is 1412420033. The reversal of 1412420021 is 1200242141.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 467164996 + 945255025 = 21614^2 + 30745^2 .

It is a cyclic number.

It is not a de Polignac number, because 1412420021 - 2¹⁴ = 1412403637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1412420221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4739516 + ... + 4739813.

It is an arithmetic number, because the mean of its divisors is an integer number (355474875).

Almost surely, 2^1412420021 is an apocalyptic number.

It is an amenable number.

1412420021 is a deficient number, since it is larger than the sum of its proper divisors (9479479).

1412420021 is an equidigital number, since it uses as much as digits as its factorization.

1412420021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9479478.

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

The square root of 1412420021 is about 37582.1769060814. The cubic root of 1412420021 is about 1121.9873359950.

Adding to 1412420021 its reverse (1200242141), we get a palindrome (2612662162).

The spelling of 1412420021 in words is "one billion, four hundred twelve million, four hundred twenty thousand, twenty-one".