1240242430 has 24 divisors (see below), whose sum is σ = 2596916808. Its totient is φ = 425225808.

The previous prime is 1240242407. The next prime is 1240242433. The reversal of 1240242430 is 342420421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240242433) 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, 1265064 + ... + 1266043.

It is an arithmetic number, because the mean of its divisors is an integer number (108204867).

Almost surely, 2^1240242430 is an apocalyptic number.

1240242430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1240242430 is an abundant number, since it is smaller than the sum of its proper divisors (1356674378).

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

1240242430 is a wasteful number, since it uses less digits than its factorization.

1240242430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531128 (or 2531121 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1240242430 is about 35217.0758297733. The cubic root of 1240242430 is about 1074.4070802805.

Adding to 1240242430 its reverse (342420421), we get a palindrome (1582662851).

The spelling of 1240242430 in words is "one billion, two hundred forty million, two hundred forty-two thousand, four hundred thirty".