102019087 has 2 divisors, whose sum is σ = 102019088. Its totient is φ = 102019086.

The previous prime is 102019079. The next prime is 102019103. The reversal of 102019087 is 780910201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102019087 - 2³ = 102019079 is a prime.

It is a super-2 number, since 2×102019087² = 20815788224627138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102019387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51009543 + 51009544.

It is an arithmetic number, because the mean of its divisors is an integer number (51009544).

Almost surely, 2^102019087 is an apocalyptic number.

102019087 is a deficient number, since it is larger than the sum of its proper divisors (1).

102019087 is an equidigital number, since it uses as much as digits as its factorization.

102019087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 102019087 is about 10100.4498414675. The cubic root of 102019087 is about 467.2620150500.

Adding to 102019087 its reverse (780910201), we get a palindrome (882929288).

The spelling of 102019087 in words is "one hundred two million, nineteen thousand, eighty-seven".