202154039 has 2 divisors, whose sum is σ = 202154040. Its totient is φ = 202154038.

The previous prime is 202154027. The next prime is 202154047. The reversal of 202154039 is 930451202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202154039 - 2¹² = 202149943 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 202153999 and 202154017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202154059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101077019 + 101077020.

It is an arithmetic number, because the mean of its divisors is an integer number (101077020).

Almost surely, 2^202154039 is an apocalyptic number.

202154039 is a deficient number, since it is larger than the sum of its proper divisors (1).

202154039 is an equidigital number, since it uses as much as digits as its factorization.

202154039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 202154039 is about 14218.0884439505. The cubic root of 202154039 is about 586.8955378889.

The spelling of 202154039 in words is "two hundred two million, one hundred fifty-four thousand, thirty-nine".