102142859389 has 2 divisors, whose sum is σ = 102142859390. Its totient is φ = 102142859388.

The previous prime is 102142859359. The next prime is 102142859417. The reversal of 102142859389 is 983958241201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99710692900 + 2432166489 = 315770^2 + 49317^2 .

It is a cyclic number.

It is not a de Polignac number, because 102142859389 - 2³¹ = 99995375741 is a prime.

It is a super-2 number, since 2×102142859389² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102142859359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51071429694 + 51071429695.

It is an arithmetic number, because the mean of its divisors is an integer number (51071429695).

Almost surely, 2^102142859389 is an apocalyptic number.

It is an amenable number.

102142859389 is a deficient number, since it is larger than the sum of its proper divisors (1).

102142859389 is an equidigital number, since it uses as much as digits as its factorization.

102142859389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 102142859389 in words is "one hundred two billion, one hundred forty-two million, eight hundred fifty-nine thousand, three hundred eighty-nine".