102124019 has 4 divisors (see below), whose sum is σ = 102241344. Its totient is φ = 102006696.

The previous prime is 102123977. The next prime is 102124037. The reversal of 102124019 is 910421201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910421201 = 79 ⋅11524319.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102124019 is a prime.

It is a super-2 number, since 2×102124019² = 20858630513424722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102124039) 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, 57347 + ... + 59100.

It is an arithmetic number, because the mean of its divisors is an integer number (25560336).

Almost surely, 2^102124019 is an apocalyptic number.

102124019 is a deficient number, since it is larger than the sum of its proper divisors (117325).

102124019 is an equidigital number, since it uses as much as digits as its factorization.

102124019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117324.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 102124019 is about 10105.6429285820. The cubic root of 102124019 is about 467.4221613474.

The spelling of 102124019 in words is "one hundred two million, one hundred twenty-four thousand, nineteen".