4913121 has 4 divisors (see below), whose sum is σ = 6550832. Its totient is φ = 3275412.

The previous prime is 4913113. The next prime is 4913131. The reversal of 4913121 is 1213194.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4913121 - 2³ = 4913113 is a prime.

It is a D-number.

It is a Duffinian number.

4913121 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4913101) 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, 818851 + ... + 818856.

It is an arithmetic number, because the mean of its divisors is an integer number (1637708).

Almost surely, 2^4913121 is an apocalyptic number.

It is an amenable number.

4913121 is a deficient number, since it is larger than the sum of its proper divisors (1637711).

4913121 is a wasteful number, since it uses less digits than its factorization.

4913121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637710.

The product of its digits is 216, while the sum is 21.

The square root of 4913121 is about 2216.5561125313. The cubic root of 4913121 is about 170.0013956056.

The spelling of 4913121 in words is "four million, nine hundred thirteen thousand, one hundred twenty-one".