1051720 has 16 divisors (see below), whose sum is σ = 2366460. Its totient is φ = 420672.

The previous prime is 1051717. The next prime is 1051747. The reversal of 1051720 is 271501.

It can be written as a sum of positive squares in 2 ways, for example, as 972196 + 79524 = 986^2 + 282^2 .

It is a super-2 number, since 2×1051720² = 2212229916800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1051694 and 1051703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13107 + ... + 13186.

2^1051720 is an apocalyptic number.

1051720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1051720 is an abundant number, since it is smaller than the sum of its proper divisors (1314740).

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

1051720 is a wasteful number, since it uses less digits than its factorization.

1051720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26304 (or 26300 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 16.

The square root of 1051720 is about 1025.5340072372. The cubic root of 1051720 is about 101.6951038728.

It can be divided in two parts, 1051 and 720, that added together give a palindrome (1771).

The spelling of 1051720 in words is "one million, fifty-one thousand, seven hundred twenty".