20340124240 has 40 divisors (see below), whose sum is σ = 48816304128. Its totient is φ = 7873595520.

The previous prime is 20340124229. The next prime is 20340124253. The reversal of 20340124240 is 4242104302.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4098352 + ... + 4103311.

Almost surely, 2^20340124240 is an apocalyptic number.

20340124240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20340124240 is an abundant number, since it is smaller than the sum of its proper divisors (28476179888).

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

20340124240 is a wasteful number, since it uses less digits than its factorization.

20340124240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8201707 (or 8201701 counting only the distinct ones).

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

Adding to 20340124240 its reverse (4242104302), we get a palindrome (24582228542).

The spelling of 20340124240 in words is "twenty billion, three hundred forty million, one hundred twenty-four thousand, two hundred forty".