202026421 has 2 divisors, whose sum is σ = 202026422. Its totient is φ = 202026420.

The previous prime is 202026389. The next prime is 202026467. The reversal of 202026421 is 124620202.

202026421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112042225 + 89984196 = 10585^2 + 9486^2 .

It is a cyclic number.

It is not a de Polignac number, because 202026421 - 2⁵ = 202026389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202026491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101013210 + 101013211.

It is an arithmetic number, because the mean of its divisors is an integer number (101013211).

Almost surely, 2^202026421 is an apocalyptic number.

It is an amenable number.

202026421 is a deficient number, since it is larger than the sum of its proper divisors (1).

202026421 is an equidigital number, since it uses as much as digits as its factorization.

202026421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 202026421 is about 14213.5998606968. The cubic root of 202026421 is about 586.7720112925.

Adding to 202026421 its reverse (124620202), we get a palindrome (326646623).

It can be divided in two parts, 2020 and 26421, that added together give a triangular number (28441 = T₂₃₈).

The spelling of 202026421 in words is "two hundred two million, twenty-six thousand, four hundred twenty-one".