87428141 has 2 divisors, whose sum is σ = 87428142. Its totient is φ = 87428140.

The previous prime is 87428087. The next prime is 87428191. The reversal of 87428141 is 14182478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55562116 + 31866025 = 7454^2 + 5645^2 .

It is a cyclic number.

It is not a de Polignac number, because 87428141 - 2¹⁴ = 87411757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87428191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43714070 + 43714071.

It is an arithmetic number, because the mean of its divisors is an integer number (43714071).

Almost surely, 2^87428141 is an apocalyptic number.

It is an amenable number.

87428141 is a deficient number, since it is larger than the sum of its proper divisors (1).

87428141 is an equidigital number, since it uses as much as digits as its factorization.

87428141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14336, while the sum is 35.

The square root of 87428141 is about 9350.3016528880. The cubic root of 87428141 is about 443.8304363611.

The spelling of 87428141 in words is "eighty-seven million, four hundred twenty-eight thousand, one hundred forty-one".