102423455 has 4 divisors (see below), whose sum is σ = 122908152. Its totient is φ = 81938760.

The previous prime is 102423443. The next prime is 102423457. The reversal of 102423455 is 554324201.

It is a happy number.

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

It is not a de Polignac number, because 102423455 - 2¹⁶ = 102357919 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 (102423457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10242341 + ... + 10242350.

It is an arithmetic number, because the mean of its divisors is an integer number (30727038).

Almost surely, 2^102423455 is an apocalyptic number.

102423455 is a deficient number, since it is larger than the sum of its proper divisors (20484697).

102423455 is an equidigital number, since it uses as much as digits as its factorization.

102423455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20484696.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 102423455 is about 10120.4473715345. The cubic root of 102423455 is about 467.8785556142.

Adding to 102423455 its reverse (554324201), we get a palindrome (656747656).

The spelling of 102423455 in words is "one hundred two million, four hundred twenty-three thousand, four hundred fifty-five".