1243003420 has 12 divisors (see below), whose sum is σ = 2610307224. Its totient is φ = 497201360.

The previous prime is 1243003417. The next prime is 1243003439. The reversal of 1243003420 is 243003421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31075066 + ... + 31075105.

It is an arithmetic number, because the mean of its divisors is an integer number (217525602).

Almost surely, 2^1243003420 is an apocalyptic number.

1243003420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243003420 is an abundant number, since it is smaller than the sum of its proper divisors (1367303804).

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

1243003420 is a wasteful number, since it uses less digits than its factorization.

1243003420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62150180 (or 62150178 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1243003420 is about 35256.2536296754. The cubic root of 1243003420 is about 1075.2037601861.

Adding to 1243003420 its reverse (243003421), we get a palindrome (1486006841).

Subtracting from 1243003420 its reverse (243003421), we obtain a palindrome (999999999).

The spelling of 1243003420 in words is "one billion, two hundred forty-three million, three thousand, four hundred twenty".