4123720 has 16 divisors (see below), whose sum is σ = 9278460. Its totient is φ = 1649472.

The previous prime is 4123681. The next prime is 4123727. The reversal of 4123720 is 273214.

It can be written as a sum of positive squares in 2 ways, for example, as 4104676 + 19044 = 2026^2 + 138^2 .

It is not an unprimeable number, because it can be changed into a prime (4123727) 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, 51507 + ... + 51586.

Almost surely, 2^4123720 is an apocalyptic number.

4123720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4123720 is an abundant number, since it is smaller than the sum of its proper divisors (5154740).

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

4123720 is a wasteful number, since it uses less digits than its factorization.

4123720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103104 (or 103100 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 4123720 is about 2030.6944624931. The cubic root of 4123720 is about 160.3601263233.

Adding to 4123720 its reverse (273214), we get a palindrome (4396934).

The spelling of 4123720 in words is "four million, one hundred twenty-three thousand, seven hundred twenty".