1240144430 has 24 divisors (see below), whose sum is σ = 2596711608. Its totient is φ = 425192208.

The previous prime is 1240144393. The next prime is 1240144439. The reversal of 1240144430 is 344410421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1240144396 and 1240144405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240144439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1264964 + ... + 1265943.

It is an arithmetic number, because the mean of its divisors is an integer number (108196317).

Almost surely, 2^1240144430 is an apocalyptic number.

1240144430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1240144430 is an abundant number, since it is smaller than the sum of its proper divisors (1356567178).

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

1240144430 is a wasteful number, since it uses less digits than its factorization.

1240144430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530928 (or 2530921 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1240144430 is about 35215.6844317983. The cubic root of 1240144430 is about 1074.3787807952.

Adding to 1240144430 its reverse (344410421), we get a palindrome (1584554851).

The spelling of 1240144430 in words is "one billion, two hundred forty million, one hundred forty-four thousand, four hundred thirty".