102026009 has 2 divisors, whose sum is σ = 102026010. Its totient is φ = 102026008.

The previous prime is 102025997. The next prime is 102026017. The reversal of 102026009 is 900620201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83320384 + 18705625 = 9128^2 + 4325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102026009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102026609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51013004 + 51013005.

It is an arithmetic number, because the mean of its divisors is an integer number (51013005).

Almost surely, 2^102026009 is an apocalyptic number.

It is an amenable number.

102026009 is a deficient number, since it is larger than the sum of its proper divisors (1).

102026009 is an equidigital number, since it uses as much as digits as its factorization.

102026009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 102026009 is about 10100.7924936611. The cubic root of 102026009 is about 467.2725827278.

The spelling of 102026009 in words is "one hundred two million, twenty-six thousand, nine".