20100501342 has 12 divisors (see below), whose sum is σ = 43551086280. Its totient is φ = 6700167108.

The previous prime is 20100501331. The next prime is 20100501349. The reversal of 20100501342 is 24310500102.

20100501342 is a `hidden beast` number, since 20 + 100 + 501 + 3 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1116694519 = 20100501342 / (2 + 0 + 1 + 0 + 0 + 5 + 0 + 1 + 3 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100501349) 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 5 ways as a sum of consecutive naturals, for example, 558347242 + ... + 558347277.

It is an arithmetic number, because the mean of its divisors is an integer number (3629257190).

Almost surely, 2^20100501342 is an apocalyptic number.

20100501342 is an abundant number, since it is smaller than the sum of its proper divisors (23450584938).

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

20100501342 is a wasteful number, since it uses less digits than its factorization.

20100501342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116694527 (or 1116694524 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The spelling of 20100501342 in words is "twenty billion, one hundred million, five hundred one thousand, three hundred forty-two".