78224123 has 8 divisors (see below), whose sum is σ = 83432592. Its totient is φ = 73083136.

The previous prime is 78224117. The next prime is 78224149. The reversal of 78224123 is 32142287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78224123 - 2¹² = 78220027 is a prime.

It is a super-2 number, since 2×78224123² = 12238026838238258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78224183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14465 + ... + 19122.

It is an arithmetic number, because the mean of its divisors is an integer number (10429074).

Almost surely, 2^78224123 is an apocalyptic number.

78224123 is a deficient number, since it is larger than the sum of its proper divisors (5208469).

78224123 is a wasteful number, since it uses less digits than its factorization.

78224123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33741.

The product of its digits is 5376, while the sum is 29.

The square root of 78224123 is about 8844.4402310152. The cubic root of 78224123 is about 427.6747080680.

The spelling of 78224123 in words is "seventy-eight million, two hundred twenty-four thousand, one hundred twenty-three".