102305942 has 4 divisors (see below), whose sum is σ = 153458916. Its totient is φ = 51152970.

The previous prime is 102305897. The next prime is 102306007. The reversal of 102305942 is 249503201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 249503201 = 2887 ⋅86423.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25576484 + ... + 25576487.

It is an arithmetic number, because the mean of its divisors is an integer number (38364729).

Almost surely, 2^102305942 is an apocalyptic number.

102305942 is a deficient number, since it is larger than the sum of its proper divisors (51152974).

102305942 is an equidigital number, since it uses as much as digits as its factorization.

102305942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51152973.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 102305942 is about 10114.6399837068. The cubic root of 102305942 is about 467.6995508688.

The spelling of 102305942 in words is "one hundred two million, three hundred five thousand, nine hundred forty-two".