102404402 has 8 divisors (see below), whose sum is σ = 153694236. Its totient is φ = 51172992.

The previous prime is 102404387. The next prime is 102404411. The reversal of 102404402 is 204404201.

It can be written as a sum of positive squares in 2 ways, for example, as 102191881 + 212521 = 10109^2 + 461^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9923 + ... + 17414.

Almost surely, 2^102404402 is an apocalyptic number.

102404402 is a deficient number, since it is larger than the sum of its proper divisors (51289834).

102404402 is a wasteful number, since it uses less digits than its factorization.

102404402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29212.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 102404402 is about 10119.5060156116. The cubic root of 102404402 is about 467.8495419378.

Adding to 102404402 its reverse (204404201), we get a palindrome (306808603).

The spelling of 102404402 in words is "one hundred two million, four hundred four thousand, four hundred two".