1005023122 has 4 divisors (see below), whose sum is σ = 1507534686. Its totient is φ = 502511560.

The previous prime is 1005023099. The next prime is 1005023141. The reversal of 1005023122 is 2213205001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 722480641 + 282542481 = 26879^2 + 16809^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1005023096 and 1005023105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251255779 + ... + 251255782.

Almost surely, 2^1005023122 is an apocalyptic number.

1005023122 is a deficient number, since it is larger than the sum of its proper divisors (502511564).

1005023122 is an equidigital number, since it uses as much as digits as its factorization.

1005023122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502511563.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1005023122 is about 31702.0996465534. The cubic root of 1005023122 is about 1001.6715782692.

Adding to 1005023122 its reverse (2213205001), we get a palindrome (3218228123).

The spelling of 1005023122 in words is "one billion, five million, twenty-three thousand, one hundred twenty-two".