102323404402 has 4 divisors (see below), whose sum is σ = 153485106606. Its totient is φ = 51161702200.

The previous prime is 102323404373. The next prime is 102323404427. The reversal of 102323404402 is 204404323201.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 87544382641 + 14779021761 = 295879^2 + 121569^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25580851099 + ... + 25580851102.

Almost surely, 2^102323404402 is an apocalyptic number.

102323404402 is a deficient number, since it is larger than the sum of its proper divisors (51161702204).

102323404402 is an equidigital number, since it uses as much as digits as its factorization.

102323404402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51161702203.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 102323404402 its reverse (204404323201), we get a palindrome (306727727603).

The spelling of 102323404402 in words is "one hundred two billion, three hundred twenty-three million, four hundred four thousand, four hundred two".