4010121 has 16 divisors (see below), whose sum is σ = 6254400. Its totient is φ = 2532384.

The previous prime is 4010117. The next prime is 4010131. The reversal of 4010121 is 1210104.

It is a happy number.

It is not a de Polignac number, because 4010121 - 2² = 4010117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a zygodrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (4010101) 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, 3396 + ... + 4421.

It is an arithmetic number, because the mean of its divisors is an integer number (390900).

Almost surely, 2^4010121 is an apocalyptic number.

It is an amenable number.

4010121 is a deficient number, since it is larger than the sum of its proper divisors (2244279).

4010121 is a wasteful number, since it uses less digits than its factorization.

4010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7845 (or 7839 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 4010121 is about 2002.5286514804. The cubic root of 4010121 is about 158.8738764856.

Adding to 4010121 its reverse (1210104), we get a palindrome (5220225).

The spelling of 4010121 in words is "four million, ten thousand, one hundred twenty-one".