102426665 has 32 divisors (see below), whose sum is σ = 137846016. Its totient is φ = 72437760.

The previous prime is 102426641. The next prime is 102426671. The reversal of 102426665 is 566624201.

It is not a de Polignac number, because 102426665 - 2⁶ = 102426601 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 389324 + ... + 389586.

It is an arithmetic number, because the mean of its divisors is an integer number (4307688).

Almost surely, 2^102426665 is an apocalyptic number.

It is an amenable number.

102426665 is a deficient number, since it is larger than the sum of its proper divisors (35419351).

102426665 is a wasteful number, since it uses less digits than its factorization.

102426665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 102426665 is about 10120.6059601192. The cubic root of 102426665 is about 467.8834434090.

The spelling of 102426665 in words is "one hundred two million, four hundred twenty-six thousand, six hundred sixty-five".