102942739 has 2 divisors, whose sum is σ = 102942740. Its totient is φ = 102942738.

The previous prime is 102942713. The next prime is 102942751. The reversal of 102942739 is 937249201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102942739 - 2⁷ = 102942611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102942698 and 102942707.

It is not a weakly prime, because it can be changed into another prime (102942139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51471369 + 51471370.

It is an arithmetic number, because the mean of its divisors is an integer number (51471370).

Almost surely, 2^102942739 is an apocalyptic number.

102942739 is a deficient number, since it is larger than the sum of its proper divisors (1).

102942739 is an equidigital number, since it uses as much as digits as its factorization.

102942739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 102942739 is about 10146.0701259157. The cubic root of 102942739 is about 468.6679333900.

It can be divided in two parts, 102 and 942739, that added together give a square (942841 = 971²).

The spelling of 102942739 in words is "one hundred two million, nine hundred forty-two thousand, seven hundred thirty-nine".