1057420 has 72 divisors (see below), whose sum is σ = 2815344. Its totient is φ = 330624.

The previous prime is 1057411. The next prime is 1057421. The reversal of 1057420 is 247501.

1057420 is nontrivially palindromic in base 12.

It is a super-2 number, since 2×1057420² = 2236274112800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1057421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12699 + ... + 12781.

It is an arithmetic number, because the mean of its divisors is an integer number (39102).

2^1057420 is an apocalyptic number.

1057420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1057420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1407672).

1057420 is an abundant number, since it is smaller than the sum of its proper divisors (1757924).

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

1057420 is a wasteful number, since it uses less digits than its factorization.

1057420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 1057420 is about 1028.3092919934. The cubic root of 1057420 is about 101.8784917317.

The spelling of 1057420 in words is "one million, fifty-seven thousand, four hundred twenty".