4015121 has 16 divisors (see below), whose sum is σ = 4572288. Its totient is φ = 3494400.

The previous prime is 4015117. The next prime is 4015139. The reversal of 4015121 is 1215104.

It is a cyclic number.

It is not a de Polignac number, because 4015121 - 2² = 4015117 is a prime.

It is a super-2 number, since 2×4015121² = 32242393289282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4015096 and 4015105.

It is not an unprimeable number, because it can be changed into a prime (4015421) 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, 41345 + ... + 41441.

It is an arithmetic number, because the mean of its divisors is an integer number (285768).

Almost surely, 2^4015121 is an apocalyptic number.

It is an amenable number.

4015121 is a deficient number, since it is larger than the sum of its proper divisors (557167).

4015121 is a wasteful number, since it uses less digits than its factorization.

4015121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 4015121 is about 2003.7766841642. The cubic root of 4015121 is about 158.9398794366.

The spelling of 4015121 in words is "four million, fifteen thousand, one hundred twenty-one".