102280879 has 4 divisors (see below), whose sum is σ = 102405384. Its totient is φ = 102156376.

The previous prime is 102280877. The next prime is 102280897. The reversal of 102280879 is 978082201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978082201 = 15031 ⋅65071.

It is a cyclic number.

It is not a de Polignac number, because 102280879 - 2¹ = 102280877 is a prime.

It is a super-2 number, since 2×102280879² = 20922756418025282, 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 (102280877) 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, 61012 + ... + 62665.

It is an arithmetic number, because the mean of its divisors is an integer number (25601346).

Almost surely, 2^102280879 is an apocalyptic number.

102280879 is a deficient number, since it is larger than the sum of its proper divisors (124505).

102280879 is an equidigital number, since it uses as much as digits as its factorization.

102280879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124504.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 102280879 is about 10113.4009611011. The cubic root of 102280879 is about 467.6613552666.

The spelling of 102280879 in words is "one hundred two million, two hundred eighty thousand, eight hundred seventy-nine".