202120010442 has 24 divisors (see below), whose sum is σ = 500487645216. Its totient is φ = 57748574376.

The previous prime is 202120010441. The next prime is 202120010479. The reversal of 202120010442 is 244010021202.

202120010442 is a `hidden beast` number, since 2 + 0 + 21 + 200 + 1 + 0 + 442 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (202120010441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 802063408 + ... + 802063659.

It is an arithmetic number, because the mean of its divisors is an integer number (20853651884).

Almost surely, 2^202120010442 is an apocalyptic number.

202120010442 is an abundant number, since it is smaller than the sum of its proper divisors (298367634774).

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

202120010442 is a wasteful number, since it uses less digits than its factorization.

202120010442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604127082 (or 1604127079 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 202120010442 its reverse (244010021202), we get a palindrome (446130031644).

The spelling of 202120010442 in words is "two hundred two billion, one hundred twenty million, ten thousand, four hundred forty-two".