424238121 has 32 divisors (see below), whose sum is σ = 645511680. Its totient is φ = 275240448.

The previous prime is 424238119. The next prime is 424238123. The reversal of 424238121 is 121832424.

424238121 is a `hidden beast` number, since 424 + 238 + 1 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (424238119) and next prime (424238123).

It is not a de Polignac number, because 424238121 - 2¹ = 424238119 is a prime.

It is a super-2 number, since 2×424238121² = 359955966619221282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (424238123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 249145 + ... + 250841.

It is an arithmetic number, because the mean of its divisors is an integer number (20172240).

Almost surely, 2^424238121 is an apocalyptic number.

It is an amenable number.

424238121 is a deficient number, since it is larger than the sum of its proper divisors (221273559).

424238121 is a wasteful number, since it uses less digits than its factorization.

424238121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950 (or 1944 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 424238121 is about 20597.0415594085. The cubic root of 424238121 is about 751.3977613991.

The spelling of 424238121 in words is "four hundred twenty-four million, two hundred thirty-eight thousand, one hundred twenty-one".