102406265 has 8 divisors (see below), whose sum is σ = 132340488. Its totient is φ = 75623040.

The previous prime is 102406253. The next prime is 102406289. The reversal of 102406265 is 562604201.

It can be written as a sum of positive squares in 4 ways, for example, as 4376464 + 98029801 = 2092^2 + 9901^2 .

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

It is not a de Polignac number, because 102406265 - 2⁸ = 102406009 is a prime.

It is a super-2 number, since 2×102406265² = 20974086222500450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787676 + ... + 787805.

It is an arithmetic number, because the mean of its divisors is an integer number (16542561).

Almost surely, 2^102406265 is an apocalyptic number.

It is an amenable number.

102406265 is a deficient number, since it is larger than the sum of its proper divisors (29934223).

102406265 is a wasteful number, since it uses less digits than its factorization.

102406265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575499.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 102406265 is about 10119.5980651407. The cubic root of 102406265 is about 467.8523790503.

The spelling of 102406265 in words is "one hundred two million, four hundred six thousand, two hundred sixty-five".