2021203542 has 32 divisors (see below), whose sum is σ = 4282526592. Its totient is φ = 633757824.

The previous prime is 2021203537. The next prime is 2021203567. The reversal of 2021203542 is 2453021202.

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 15 ways as a sum of consecutive naturals, for example, 235173 + ... + 243615.

It is an arithmetic number, because the mean of its divisors is an integer number (133828956).

Almost surely, 2^2021203542 is an apocalyptic number.

2021203542 is an abundant number, since it is smaller than the sum of its proper divisors (2261323050).

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

2021203542 is a wasteful number, since it uses less digits than its factorization.

2021203542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10812.

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

The square root of 2021203542 is about 44957.7973437312. The cubic root of 2021203542 is about 1264.3578720657.

Adding to 2021203542 its reverse (2453021202), we get a palindrome (4474224744).

The spelling of 2021203542 in words is "two billion, twenty-one million, two hundred three thousand, five hundred forty-two".