102740719 has 4 divisors (see below), whose sum is σ = 102762144. Its totient is φ = 102719296.

The previous prime is 102740699. The next prime is 102740723. The reversal of 102740719 is 917047201.

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

It is a cyclic number.

It is not a de Polignac number, because 102740719 - 2¹⁹ = 102216431 is a prime.

It is a super-2 number, since 2×102740719² = 21111310681273922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102740779) 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, 159 + ... + 14335.

It is an arithmetic number, because the mean of its divisors is an integer number (25690536).

Almost surely, 2^102740719 is an apocalyptic number.

102740719 is a deficient number, since it is larger than the sum of its proper divisors (21425).

102740719 is an equidigital number, since it uses as much as digits as its factorization.

102740719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21424.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 102740719 is about 10136.1096580493. The cubic root of 102740719 is about 468.3611534605.

The spelling of 102740719 in words is "one hundred two million, seven hundred forty thousand, seven hundred nineteen".