1255430 has 32 divisors (see below), whose sum is σ = 2511648. Its totient is φ = 448000.
The previous prime is 1255427. The next prime is 1255451. The reversal of 1255430 is 345521.
It is a super-2 number, since 2×12554302 = 3152208969800, 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 15 ways as a sum of consecutive naturals, for example, 11054 + ... + 11166.
It is an arithmetic number, because the mean of its divisors is an integer number (78489).
21255430 is an apocalyptic number.
1255430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
1255430 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
1255430 is a wasteful number, since it uses less digits than its factorization.
1255430 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 232.
The product of its (nonzero) digits is 600, while the sum is 20.
The square root of 1255430 is about 1120.4597270763. The cubic root of 1255430 is about 107.8774902561.
Subtracting from 1255430 its reverse (345521), we obtain a palindrome (909909).
It can be divided in two parts, 125 and 5430, that added together give a palindrome (5555).
The spelling of 1255430 in words is "one million, two hundred fifty-five thousand, four hundred thirty".
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