1420231421 has 16 divisors (see below), whose sum is σ = 1695262080. Its totient is φ = 1164352320.

The previous prime is 1420231381. The next prime is 1420231429. The reversal of 1420231421 is 1241320241.

It is a cyclic number.

It is not a de Polignac number, because 1420231421 - 2¹⁰ = 1420230397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1420231393 and 1420231402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420231429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31190 + ... + 61751.

It is an arithmetic number, because the mean of its divisors is an integer number (105953880).

Almost surely, 2^1420231421 is an apocalyptic number.

It is an amenable number.

1420231421 is a deficient number, since it is larger than the sum of its proper divisors (275030659).

1420231421 is an equidigital number, since it uses as much as digits as its factorization.

1420231421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93044.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1420231421 is about 37685.9578755801. The cubic root of 1420231421 is about 1124.0519211778.

Adding to 1420231421 its reverse (1241320241), we get a palindrome (2661551662).

The spelling of 1420231421 in words is "one billion, four hundred twenty million, two hundred thirty-one thousand, four hundred twenty-one".