1055430 has 40 divisors (see below), whose sum is σ = 2840112. Its totient is φ = 281232.

The previous prime is 1055429. The next prime is 1055437. The reversal of 1055430 is 345501.

It is a super-2 number, since 2×1055430² = 2227864969800, which contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055437) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 159 + ... + 1461.

2^1055430 is an apocalyptic number.

1055430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1055430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1420056).

1055430 is an abundant number, since it is smaller than the sum of its proper divisors (1784682).

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

1055430 is a wasteful number, since it uses less digits than its factorization.

1055430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322 (or 1313 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1055430 is about 1027.3412286091. The cubic root of 1055430 is about 101.8145418941.

It can be divided in two parts, 1055 and 430, that added together give a triangular number (1485 = T₅₄).

The spelling of 1055430 in words is "one million, fifty-five thousand, four hundred thirty".