102719497 has 4 divisors (see below), whose sum is σ = 102740500. Its totient is φ = 102698496.

The previous prime is 102719483. The next prime is 102719549. The reversal of 102719497 is 794917201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 794917201 = 13 ⋅61147477.

It can be written as a sum of positive squares in 2 ways, for example, as 74459641 + 28259856 = 8629^2 + 5316^2 .

It is a cyclic number.

It is not a de Polignac number, because 102719497 - 2¹⁹ = 102195209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102719417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1129 + ... + 14377.

It is an arithmetic number, because the mean of its divisors is an integer number (25685125).

Almost surely, 2^102719497 is an apocalyptic number.

It is an amenable number.

102719497 is a deficient number, since it is larger than the sum of its proper divisors (21003).

102719497 is an equidigital number, since it uses as much as digits as its factorization.

102719497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21002.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 102719497 is about 10135.0627526424. The cubic root of 102719497 is about 468.3289032001.

The spelling of 102719497 in words is "one hundred two million, seven hundred nineteen thousand, four hundred ninety-seven".