1061256120 has 64 divisors (see below), whose sum is σ = 3186069120. Its totient is φ = 282797184.

The previous prime is 1061256113. The next prime is 1061256151. The reversal of 1061256120 is 216521601.

It is a super-2 number, since 2×1061256120² = 2252529104474908800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241059 + ... + 245421.

It is an arithmetic number, because the mean of its divisors is an integer number (49782330).

Almost surely, 2^1061256120 is an apocalyptic number.

1061256120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061256120 is an abundant number, since it is smaller than the sum of its proper divisors (2124813000).

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

1061256120 is a wasteful number, since it uses less digits than its factorization.

1061256120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6404 (or 6400 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1061256120 is about 32576.9261901733. The cubic root of 1061256120 is about 1020.0154169142.

Adding to 1061256120 its reverse (216521601), we get a palindrome (1277777721).

The spelling of 1061256120 in words is "one billion, sixty-one million, two hundred fifty-six thousand, one hundred twenty".