1056420 has 36 divisors (see below), whose sum is σ = 3205020. Its totient is φ = 281664.

The previous prime is 1056401. The next prime is 1056443. The reversal of 1056420 is 246501.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 224676 + 831744 = 474^2 + 912^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1056420² = 2232046432800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1056393 and 1056402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2755 + ... + 3114.

2^1056420 is an apocalyptic number.

1056420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1056420 is an abundant number, since it is smaller than the sum of its proper divisors (2148600).

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

1056420 is a wasteful number, since it uses less digits than its factorization.

1056420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5884 (or 5879 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1056420 is about 1027.8229419506. The cubic root of 1056420 is about 101.8463661733.

The spelling of 1056420 in words is "one million, fifty-six thousand, four hundred twenty".