102409455 has 32 divisors (see below), whose sum is σ = 172730880. Its totient is φ = 51708800.

The previous prime is 102409453. The next prime is 102409499. The reversal of 102409455 is 554904201.

It is not a de Polignac number, because 102409455 - 2¹ = 102409453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102409453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33376 + ... + 36314.

It is an arithmetic number, because the mean of its divisors is an integer number (5397840).

Almost surely, 2^102409455 is an apocalyptic number.

102409455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102409455 is a deficient number, since it is larger than the sum of its proper divisors (70321425).

102409455 is a wasteful number, since it uses less digits than its factorization.

102409455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3071.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 102409455 is about 10119.7556788689. The cubic root of 102409455 is about 467.8572369353.

The spelling of 102409455 in words is "one hundred two million, four hundred nine thousand, four hundred fifty-five".