102203149 has 2 divisors, whose sum is σ = 102203150. Its totient is φ = 102203148.

The previous prime is 102203111. The next prime is 102203203. The reversal of 102203149 is 941302201.

102203149 is nontrivially palindromic in base 14.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68062500 + 34140649 = 8250^2 + 5843^2 .

It is a cyclic number.

It is not a de Polignac number, because 102203149 - 2¹¹ = 102201101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102203749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51101574 + 51101575.

It is an arithmetic number, because the mean of its divisors is an integer number (51101575).

Almost surely, 2^102203149 is an apocalyptic number.

It is an amenable number.

102203149 is a deficient number, since it is larger than the sum of its proper divisors (1).

102203149 is an equidigital number, since it uses as much as digits as its factorization.

102203149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 102203149 is about 10109.5573097935. The cubic root of 102203149 is about 467.5428563188.

The spelling of 102203149 in words is "one hundred two million, two hundred three thousand, one hundred forty-nine".