1240320430 has 16 divisors (see below), whose sum is σ = 2309562720. Its totient is φ = 479020192.

The previous prime is 1240320421. The next prime is 1240320457. The reversal of 1240320430 is 340230421.

It is a junction number, because it is equal to n+sod(n) for n = 1240320398 and 1240320407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2138194 + ... + 2138773.

It is an arithmetic number, because the mean of its divisors is an integer number (144347670).

Almost surely, 2^1240320430 is an apocalyptic number.

1240320430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1240320430 is a deficient number, since it is larger than the sum of its proper divisors (1069242290).

1240320430 is a wasteful number, since it uses less digits than its factorization.

1240320430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277003.

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

The square root of 1240320430 is about 35218.1832296897. The cubic root of 1240320430 is about 1074.4296032952.

Adding to 1240320430 its reverse (340230421), we get a palindrome (1580550851).

Subtracting from 1240320430 its reverse (340230421), we obtain a palindrome (900090009).

The spelling of 1240320430 in words is "one billion, two hundred forty million, three hundred twenty thousand, four hundred thirty".