128902141 has 2 divisors, whose sum is σ = 128902142. Its totient is φ = 128902140.

The previous prime is 128902093. The next prime is 128902157. The reversal of 128902141 is 141209821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90820900 + 38081241 = 9530^2 + 6171^2 .

It is an emirp because it is prime and its reverse (141209821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128902141 - 2¹⁹ = 128377853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128912141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64451070 + 64451071.

It is an arithmetic number, because the mean of its divisors is an integer number (64451071).

Almost surely, 2^128902141 is an apocalyptic number.

It is an amenable number.

128902141 is a deficient number, since it is larger than the sum of its proper divisors (1).

128902141 is an equidigital number, since it uses as much as digits as its factorization.

128902141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 128902141 is about 11353.5078720191. The cubic root of 128902141 is about 505.1496351009.

The spelling of 128902141 in words is "one hundred twenty-eight million, nine hundred two thousand, one hundred forty-one".