102052405 has 16 divisors (see below), whose sum is σ = 150724224. Its totient is φ = 64595520.

The previous prime is 102052399. The next prime is 102052409. The reversal of 102052405 is 504250201.

It is not a de Polignac number, because 102052405 - 2⁷ = 102052277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102052409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111691 + ... + 112600.

It is an arithmetic number, because the mean of its divisors is an integer number (9420264).

Almost surely, 2^102052405 is an apocalyptic number.

It is an amenable number.

102052405 is a deficient number, since it is larger than the sum of its proper divisors (48671819).

102052405 is a wasteful number, since it uses less digits than its factorization.

102052405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224316.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 102052405 is about 10102.0990393086. The cubic root of 102052405 is about 467.3128765825.

The spelling of 102052405 in words is "one hundred two million, fifty-two thousand, four hundred five".