1022540345 has 4 divisors (see below), whose sum is σ = 1227048420. Its totient is φ = 818032272.

The previous prime is 1022540339. The next prime is 1022540353. The reversal of 1022540345 is 5430452201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5430452201 = 21341 ⋅254461.

It can be written as a sum of positive squares in 2 ways, for example, as 403326889 + 619213456 = 20083^2 + 24884^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022540345 - 2²⁶ = 955431481 is a prime.

It is a Curzon number.

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, 102254030 + ... + 102254039.

It is an arithmetic number, because the mean of its divisors is an integer number (306762105).

Almost surely, 2^1022540345 is an apocalyptic number.

It is an amenable number.

1022540345 is a deficient number, since it is larger than the sum of its proper divisors (204508075).

1022540345 is an equidigital number, since it uses as much as digits as its factorization.

1022540345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204508074.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1022540345 is about 31977.1847572609. The cubic root of 1022540345 is about 1007.4576928914.

Adding to 1022540345 its reverse (5430452201), we get a palindrome (6452992546).

The spelling of 1022540345 in words is "one billion, twenty-two million, five hundred forty thousand, three hundred forty-five".