90002141 has 2 divisors, whose sum is σ = 90002142. Its totient is φ = 90002140.

The previous prime is 90002137. The next prime is 90002147. The reversal of 90002141 is 14120009.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58079641 + 31922500 = 7621^2 + 5650^2 .

It is a cyclic number.

It is not a de Polignac number, because 90002141 - 2² = 90002137 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90002147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45001070 + 45001071.

It is an arithmetic number, because the mean of its divisors is an integer number (45001071).

Almost surely, 2^90002141 is an apocalyptic number.

It is an amenable number.

90002141 is a deficient number, since it is larger than the sum of its proper divisors (1).

90002141 is an equidigital number, since it uses as much as digits as its factorization.

90002141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 90002141 is about 9486.9458204419. The cubic root of 90002141 is about 448.1440282155.

The spelling of 90002141 in words is "ninety million, two thousand, one hundred forty-one".