1420262221 has 4 divisors (see below), whose sum is σ = 1623156832. Its totient is φ = 1217367612.

The previous prime is 1420262197. The next prime is 1420262257. The reversal of 1420262221 is 1222620241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1420262221 - 2¹³ = 1420254029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1420262192 and 1420262201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420262281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101447295 + ... + 101447308.

It is an arithmetic number, because the mean of its divisors is an integer number (405789208).

Almost surely, 2^1420262221 is an apocalyptic number.

It is an amenable number.

1420262221 is a deficient number, since it is larger than the sum of its proper divisors (202894611).

1420262221 is an equidigital number, since it uses as much as digits as its factorization.

1420262221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202894610.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1420262221 is about 37686.3665136346. The cubic root of 1420262221 is about 1124.0600467429.

Adding to 1420262221 its reverse (1222620241), we get a palindrome (2642882462).

The spelling of 1420262221 in words is "one billion, four hundred twenty million, two hundred sixty-two thousand, two hundred twenty-one".