102402743 has 4 divisors (see below), whose sum is σ = 102474960. Its totient is φ = 102330528.

The previous prime is 102402719. The next prime is 102402749. The reversal of 102402743 is 347204201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102402743 - 2²⁰ = 101354167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102402749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33938 + ... + 36831.

It is an arithmetic number, because the mean of its divisors is an integer number (25618740).

Almost surely, 2^102402743 is an apocalyptic number.

102402743 is a deficient number, since it is larger than the sum of its proper divisors (72217).

102402743 is an equidigital number, since it uses as much as digits as its factorization.

102402743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72216.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 102402743 is about 10119.4240448753. The cubic root of 102402743 is about 467.8470154625.

Adding to 102402743 its reverse (347204201), we get a palindrome (449606944).

The spelling of 102402743 in words is "one hundred two million, four hundred two thousand, seven hundred forty-three".