20003521242 has 32 divisors (see below), whose sum is σ = 40992557760. Its totient is φ = 6503665280.

The previous prime is 20003521217. The next prime is 20003521243. The reversal of 20003521242 is 24212530002.

It is not an unprimeable number, because it can be changed into a prime (20003521243) 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, 1519384 + ... + 1532492.

It is an arithmetic number, because the mean of its divisors is an integer number (1281017430).

Almost surely, 2^20003521242 is an apocalyptic number.

20003521242 is an abundant number, since it is smaller than the sum of its proper divisors (20989036518).

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

20003521242 is a wasteful number, since it uses less digits than its factorization.

20003521242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19358.

The product of its (nonzero) digits is 960, while the sum is 21.

The spelling of 20003521242 in words is "twenty billion, three million, five hundred twenty-one thousand, two hundred forty-two".