202021049 has 2 divisors, whose sum is σ = 202021050. Its totient is φ = 202021048.

The previous prime is 202021037. The next prime is 202021097. The reversal of 202021049 is 940120202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150798400 + 51222649 = 12280^2 + 7157^2 .

It is a cyclic number.

It is not a de Polignac number, because 202021049 - 2⁴ = 202021033 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202021049.

It is not a weakly prime, because it can be changed into another prime (202024049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010524 + 101010525.

It is an arithmetic number, because the mean of its divisors is an integer number (101010525).

Almost surely, 2^202021049 is an apocalyptic number.

It is an amenable number.

202021049 is a deficient number, since it is larger than the sum of its proper divisors (1).

202021049 is an equidigital number, since it uses as much as digits as its factorization.

202021049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 202021049 is about 14213.4108854982. The cubic root of 202021049 is about 586.7668103767.

The spelling of 202021049 in words is "two hundred two million, twenty-one thousand, forty-nine".