102190727 has 4 divisors (see below), whose sum is σ = 102236616. Its totient is φ = 102144840.

The previous prime is 102190717. The next prime is 102190733. The reversal of 102190727 is 727091201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102190727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102190727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102190717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19424 + ... + 24117.

It is an arithmetic number, because the mean of its divisors is an integer number (25559154).

Almost surely, 2^102190727 is an apocalyptic number.

102190727 is a deficient number, since it is larger than the sum of its proper divisors (45889).

102190727 is an equidigital number, since it uses as much as digits as its factorization.

102190727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45888.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 102190727 is about 10108.9429219874. The cubic root of 102190727 is about 467.5239134822.

The spelling of 102190727 in words is "one hundred two million, one hundred ninety thousand, seven hundred twenty-seven".