102076021 has 2 divisors, whose sum is σ = 102076022. Its totient is φ = 102076020.

The previous prime is 102075971. The next prime is 102076033. The reversal of 102076021 is 120670201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91584900 + 10491121 = 9570^2 + 3239^2 .

It is an emirp because it is prime and its reverse (120670201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102076021 - 2¹⁷ = 101944949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102076021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102026021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51038010 + 51038011.

It is an arithmetic number, because the mean of its divisors is an integer number (51038011).

Almost surely, 2^102076021 is an apocalyptic number.

It is an amenable number.

102076021 is a deficient number, since it is larger than the sum of its proper divisors (1).

102076021 is an equidigital number, since it uses as much as digits as its factorization.

102076021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 102076021 is about 10103.2678376850. The cubic root of 102076021 is about 467.3489208408.

The spelling of 102076021 in words is "one hundred two million, seventy-six thousand, twenty-one".