1022420345 has 4 divisors (see below), whose sum is σ = 1226904420. Its totient is φ = 817936272.

The previous prime is 1022420323. The next prime is 1022420351. The reversal of 1022420345 is 5430242201.

It is a happy number.

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 682829161 + 339591184 = 26131^2 + 18428^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022420345 - 2⁸ = 1022420089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1022420345.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102242030 + ... + 102242039.

It is an arithmetic number, because the mean of its divisors is an integer number (306726105).

Almost surely, 2^1022420345 is an apocalyptic number.

It is an amenable number.

1022420345 is a deficient number, since it is larger than the sum of its proper divisors (204484075).

1022420345 is an equidigital number, since it uses as much as digits as its factorization.

1022420345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204484074.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1022420345 is about 31975.3083644239. The cubic root of 1022420345 is about 1007.4182813568.

Adding to 1022420345 its reverse (5430242201), we get a palindrome (6452662546).

The spelling of 1022420345 in words is "one billion, twenty-two million, four hundred twenty thousand, three hundred forty-five".