1421286421 has 8 divisors (see below), whose sum is σ = 1442592704. Its totient is φ = 1400029920.

The previous prime is 1421286413. The next prime is 1421286463. The reversal of 1421286421 is 1246821241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1421286421 - 2³ = 1421286413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421286401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47200 + ... + 71206.

It is an arithmetic number, because the mean of its divisors is an integer number (180324088).

Almost surely, 2^1421286421 is an apocalyptic number.

It is an amenable number.

1421286421 is a deficient number, since it is larger than the sum of its proper divisors (21306283).

1421286421 is an equidigital number, since it uses as much as digits as its factorization.

1421286421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24891.

The product of its digits is 6144, while the sum is 31.

The square root of 1421286421 is about 37699.9525331266. The cubic root of 1421286421 is about 1124.3301812893.

The spelling of 1421286421 in words is "one billion, four hundred twenty-one million, two hundred eighty-six thousand, four hundred twenty-one".