1240653430 has 8 divisors (see below), whose sum is σ = 2233176192. Its totient is φ = 496261368.

The previous prime is 1240653413. The next prime is 1240653433. The reversal of 1240653430 is 343560421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240653433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62032662 + ... + 62032681.

It is an arithmetic number, because the mean of its divisors is an integer number (279147024).

Almost surely, 2^1240653430 is an apocalyptic number.

1240653430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1240653430 is a deficient number, since it is larger than the sum of its proper divisors (992522762).

1240653430 is a wasteful number, since it uses less digits than its factorization.

1240653430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124065350.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 1240653430 is about 35222.9105838799. The cubic root of 1240653430 is about 1074.5257486231.

The spelling of 1240653430 in words is "one billion, two hundred forty million, six hundred fifty-three thousand, four hundred thirty".