1057430 has 16 divisors (see below), whose sum is σ = 2076624. Its totient is φ = 384480.

The previous prime is 1057421. The next prime is 1057477. The reversal of 1057430 is 347501.

It is a happy number.

It is a super-2 number, since 2×1057430² = 2236316409800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4697 + ... + 4916.

It is an arithmetic number, because the mean of its divisors is an integer number (129789).

2^1057430 is an apocalyptic number.

1057430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1057430 is a deficient number, since it is larger than the sum of its proper divisors (1019194).

1057430 is a wasteful number, since it uses less digits than its factorization.

1057430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9631.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 1057430 is about 1028.3141543322. The cubic root of 1057430 is about 101.8788128850.

The spelling of 1057430 in words is "one million, fifty-seven thousand, four hundred thirty".