7123404 has 48 divisors (see below), whose sum is σ = 17696000. Its totient is φ = 2223936.

The previous prime is 7123379. The next prime is 7123409. The reversal of 7123404 is 4043217.

7123404 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (7123409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35697 + ... + 35895.

Almost surely, 2^7123404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7123404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8848000).

7123404 is an abundant number, since it is smaller than the sum of its proper divisors (10572596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7123404 is a wasteful number, since it uses less digits than its factorization.

7123404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 7123404 is about 2668.9705880732. The cubic root of 7123404 is about 192.4106877534.

Adding to 7123404 its sum of digits (21), we get a triangular number (7123425 = T₃₇₇₄).

The spelling of 7123404 in words is "seven million, one hundred twenty-three thousand, four hundred four".