4121239 has 4 divisors (see below), whose sum is σ = 4163824. Its totient is φ = 4078656.

The previous prime is 4121231. The next prime is 4121261. The reversal of 4121239 is 9321214.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4121239 - 2³ = 4121231 is a prime.

It is a super-2 number, since 2×4121239² = 33969221790242, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4121231) 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, 21147 + ... + 21340.

It is an arithmetic number, because the mean of its divisors is an integer number (1040956).

Almost surely, 2^4121239 is an apocalyptic number.

4121239 is a deficient number, since it is larger than the sum of its proper divisors (42585).

4121239 is an equidigital number, since it uses as much as digits as its factorization.

4121239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42584.

The product of its digits is 432, while the sum is 22.

The square root of 4121239 is about 2030.0834958198. The cubic root of 4121239 is about 160.3279601167.

The spelling of 4121239 in words is "four million, one hundred twenty-one thousand, two hundred thirty-nine".