42433430121 has 32 divisors (see below), whose sum is σ = 64112688000. Its totient is φ = 27728236224.

The previous prime is 42433430107. The next prime is 42433430129. The reversal of 42433430121 is 12103433424.

42433430121 is a `hidden beast` number, since 4 + 2 + 4 + 334 + 301 + 21 = 666.

It is not a de Polignac number, because 42433430121 - 2⁹ = 42433429609 is a prime.

It is a super-3 number, since 3×42433430121³ (a number of 33 digits) contains 333 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 (42433430129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1515870 + ... + 1543608.

It is an arithmetic number, because the mean of its divisors is an integer number (2003521500).

Almost surely, 2^42433430121 is an apocalyptic number.

It is an amenable number.

42433430121 is a deficient number, since it is larger than the sum of its proper divisors (21679257879).

42433430121 is a wasteful number, since it uses less digits than its factorization.

42433430121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28870 (or 28864 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 42433430121 its reverse (12103433424), we get a palindrome (54536863545).

The spelling of 42433430121 in words is "forty-two billion, four hundred thirty-three million, four hundred thirty thousand, one hundred twenty-one".