1243014040 has 32 divisors (see below), whose sum is σ = 2836179360. Its totient is φ = 490201600.

The previous prime is 1243013999. The next prime is 1243014049. The reversal of 1243014040 is 404103421.

It is a junction number, because it is equal to n+sod(n) for n = 1243013999 and 1243014017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243014049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216001 + ... + 221680.

It is an arithmetic number, because the mean of its divisors is an integer number (88630605).

Almost surely, 2^1243014040 is an apocalyptic number.

1243014040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243014040 is an abundant number, since it is smaller than the sum of its proper divisors (1593165320).

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

1243014040 is a wasteful number, since it uses less digits than its factorization.

1243014040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437763 (or 437759 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1243014040 is about 35256.4042409319. The cubic root of 1243014040 is about 1075.2068222939.

Adding to 1243014040 its reverse (404103421), we get a palindrome (1647117461).

The spelling of 1243014040 in words is "one billion, two hundred forty-three million, fourteen thousand, forty".