100143149 has 2 divisors, whose sum is σ = 100143150. Its totient is φ = 100143148.

The previous prime is 100143143. The next prime is 100143179. The reversal of 100143149 is 941341001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67732900 + 32410249 = 8230^2 + 5693^2 .

It is an emirp because it is prime and its reverse (941341001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100143149 - 2⁸ = 100142893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100143143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50071574 + 50071575.

It is an arithmetic number, because the mean of its divisors is an integer number (50071575).

Almost surely, 2^100143149 is an apocalyptic number.

It is an amenable number.

100143149 is a deficient number, since it is larger than the sum of its proper divisors (1).

100143149 is an equidigital number, since it uses as much as digits as its factorization.

100143149 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 23.

The square root of 100143149 is about 10007.1548903772. The cubic root of 100143149 is about 464.3802573633.

The spelling of 100143149 in words is "one hundred million, one hundred forty-three thousand, one hundred forty-nine".