3124420121 has 8 divisors (see below), whose sum is σ = 3134448360. Its totient is φ = 3114404352.

The previous prime is 3124420109. The next prime is 3124420127. The reversal of 3124420121 is 1210244213.

It can be written as a sum of positive squares in 4 ways, for example, as 1015314496 + 2109105625 = 31864^2 + 45925^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3124420121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3124420093 and 3124420102.

It is not an unprimeable number, because it can be changed into a prime (3124420127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813221 + ... + 817053.

It is an arithmetic number, because the mean of its divisors is an integer number (391806045).

Almost surely, 2^3124420121 is an apocalyptic number.

It is an amenable number.

3124420121 is a deficient number, since it is larger than the sum of its proper divisors (10028239).

3124420121 is a wasteful number, since it uses less digits than its factorization.

3124420121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6235.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 3124420121 is about 55896.5126014137. The cubic root of 3124420121 is about 1461.9184327667.

Adding to 3124420121 its reverse (1210244213), we get a palindrome (4334664334).

The spelling of 3124420121 in words is "three billion, one hundred twenty-four million, four hundred twenty thousand, one hundred twenty-one".