1050021245 has 24 divisors (see below), whose sum is σ = 1578498264. Its totient is φ = 664626816.

The previous prime is 1050021239. The next prime is 1050021317. The reversal of 1050021245 is 5421200501.

It can be written as a sum of positive squares in 4 ways, for example, as 21279769 + 1028741476 = 4613^2 + 32074^2 .

It is not a de Polignac number, because 1050021245 - 2⁸ = 1050020989 is a prime.

It is a super-2 number, since 2×1050021245² = 2205089229902700050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161654 + ... + 168023.

It is an arithmetic number, because the mean of its divisors is an integer number (65770761).

Almost surely, 2^1050021245 is an apocalyptic number.

It is an amenable number.

1050021245 is a deficient number, since it is larger than the sum of its proper divisors (528477019).

1050021245 is a wasteful number, since it uses less digits than its factorization.

1050021245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329709 (or 329702 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1050021245 is about 32404.0313078481. The cubic root of 1050021245 is about 1016.4032117974.

Adding to 1050021245 its reverse (5421200501), we get a palindrome (6471221746).

The spelling of 1050021245 in words is "one billion, fifty million, twenty-one thousand, two hundred forty-five".