20123410123240 has 32 divisors (see below), whose sum is σ = 46738242869760. Its totient is φ = 7789707144000.

The previous prime is 20123410123231. The next prime is 20123410123253. The reversal of 20123410123240 is 4232101432102.

It is a super-2 number, since 2×20123410123240² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8114277036 + ... + 8114279515.

It is an arithmetic number, because the mean of its divisors is an integer number (1460570089680).

Almost surely, 2^{20123410123240} is an apocalyptic number.

20123410123240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20123410123240 is an abundant number, since it is smaller than the sum of its proper divisors (26614832746520).

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

20123410123240 is a wasteful number, since it uses less digits than its factorization.

20123410123240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16228556593 (or 16228556589 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 20123410123240 its reverse (4232101432102), we get a palindrome (24355511555342).

The spelling of 20123410123240 in words is "twenty trillion, one hundred twenty-three billion, four hundred ten million, one hundred twenty-three thousand, two hundred forty".