424040121 has 24 divisors (see below), whose sum is σ = 651208896. Its totient is φ = 265293600.

The previous prime is 424040087. The next prime is 424040131. The reversal of 424040121 is 121040424.

424040121 is a `hidden beast` number, since 4 + 240 + 401 + 21 = 666.

It is not a de Polignac number, because 424040121 - 2¹³ = 424031929 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 424040094 and 424040103.

It is not an unprimeable number, because it can be changed into a prime (424040131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8355 + ... + 30296.

It is an arithmetic number, because the mean of its divisors is an integer number (27133704).

Almost surely, 2^424040121 is an apocalyptic number.

It is an amenable number.

424040121 is a deficient number, since it is larger than the sum of its proper divisors (227168775).

424040121 is a wasteful number, since it uses less digits than its factorization.

424040121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38733 (or 38730 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 424040121 is about 20592.2344829307. The cubic root of 424040121 is about 751.2808459995.

Adding to 424040121 its reverse (121040424), we get a palindrome (545080545).

The spelling of 424040121 in words is "four hundred twenty-four million, forty thousand, one hundred twenty-one".