1051205020 has 24 divisors (see below), whose sum is σ = 2323717200. Its totient is φ = 398351232.

The previous prime is 1051204997. The next prime is 1051205063. The reversal of 1051205020 is 205021501.

It is a super-2 number, since 2×1051205020² = 2210063988146400800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1051204985 and 1051205003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1382785 + ... + 1383544.

It is an arithmetic number, because the mean of its divisors is an integer number (96821550).

Almost surely, 2^1051205020 is an apocalyptic number.

1051205020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1051205020 is an abundant number, since it is smaller than the sum of its proper divisors (1272512180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1051205020 is a wasteful number, since it uses less digits than its factorization.

1051205020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766357 (or 2766355 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 1051205020 is about 32422.2920226193. The cubic root of 1051205020 is about 1016.7850265617.

Adding to 1051205020 its reverse (205021501), we get a palindrome (1256226521).

The spelling of 1051205020 in words is "one billion, fifty-one million, two hundred five thousand, twenty".