1005422045 has 4 divisors (see below), whose sum is σ = 1206506460. Its totient is φ = 804337632.

The previous prime is 1005422021. The next prime is 1005422059. The reversal of 1005422045 is 5402245001.

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: 5402245001 = 47 ⋅114941383.

It can be written as a sum of positive squares in 2 ways, for example, as 255648121 + 749773924 = 15989^2 + 27382^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1005422045 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1005422045.

It is a congruent 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, 100542200 + ... + 100542209.

It is an arithmetic number, because the mean of its divisors is an integer number (301626615).

Almost surely, 2^1005422045 is an apocalyptic number.

It is an amenable number.

1005422045 is a deficient number, since it is larger than the sum of its proper divisors (201084415).

1005422045 is an equidigital number, since it uses as much as digits as its factorization.

1005422045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201084414.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 1005422045 is about 31708.3907664832. The cubic root of 1005422045 is about 1001.8040916294.

Adding to 1005422045 its reverse (5402245001), we get a palindrome (6407667046).

The spelling of 1005422045 in words is "one billion, five million, four hundred twenty-two thousand, forty-five".