1243430 has 8 divisors (see below), whose sum is σ = 2238192. Its totient is φ = 497368.

The previous prime is 1243427. The next prime is 1243439. The reversal of 1243430 is 343421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1243430² = 3092236329800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1243399 and 1243408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62162 + ... + 62181.

It is an arithmetic number, because the mean of its divisors is an integer number (279774).

2^1243430 is an apocalyptic number.

1243430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243430 is a deficient number, since it is larger than the sum of its proper divisors (994762).

1243430 is a wasteful number, since it uses less digits than its factorization.

1243430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124350.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1243430 is about 1115.0919244618. The cubic root of 1243430 is about 107.5326744016.

Adding to 1243430 its reverse (343421), we get a palindrome (1586851).

Subtracting from 1243430 its reverse (343421), we obtain a palindrome (900009).

The spelling of 1243430 in words is "one million, two hundred forty-three thousand, four hundred thirty".