1240353430 has 32 divisors (see below), whose sum is σ = 2333608704. Its totient is φ = 473775456.

The previous prime is 1240353419. The next prime is 1240353437. The reversal of 1240353430 is 343530421.

It is a junction number, because it is equal to n+sod(n) for n = 1240353395 and 1240353404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240353437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143697 + ... + 152083.

It is an arithmetic number, because the mean of its divisors is an integer number (72925272).

Almost surely, 2^1240353430 is an apocalyptic number.

1240353430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1240353430 is a deficient number, since it is larger than the sum of its proper divisors (1093255274).

1240353430 is a wasteful number, since it uses less digits than its factorization.

1240353430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9060.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 1240353430 is about 35218.6517345568. The cubic root of 1240353430 is about 1074.4391319787.

Adding to 1240353430 its reverse (343530421), we get a palindrome (1583883851).

The spelling of 1240353430 in words is "one billion, two hundred forty million, three hundred fifty-three thousand, four hundred thirty".