102261247 has 16 divisors (see below), whose sum is σ = 113720832. Its totient is φ = 91177920.

The previous prime is 102261227. The next prime is 102261251. The reversal of 102261247 is 742162201.

It is a cyclic number.

It is not a de Polignac number, because 102261247 - 2¹⁵ = 102228479 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102261227) 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, 278458 + ... + 278824.

It is an arithmetic number, because the mean of its divisors is an integer number (7107552).

Almost surely, 2^102261247 is an apocalyptic number.

102261247 is a deficient number, since it is larger than the sum of its proper divisors (11459585).

102261247 is a wasteful number, since it uses less digits than its factorization.

102261247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 102261247 is about 10112.4303211444. The cubic root of 102261247 is about 467.6314320614.

The spelling of 102261247 in words is "one hundred two million, two hundred sixty-one thousand, two hundred forty-seven".