40234004121 has 16 divisors (see below), whose sum is σ = 55991698560. Its totient is φ = 25650071040.

The previous prime is 40234004119. The next prime is 40234004201. The reversal of 40234004121 is 12140043204.

It is not a de Polignac number, because 40234004121 - 2¹ = 40234004119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40234004101) 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 15 ways as a sum of consecutive naturals, for example, 214291 + ... + 355511.

It is an arithmetic number, because the mean of its divisors is an integer number (3499481160).

Almost surely, 2^40234004121 is an apocalyptic number.

It is an amenable number.

40234004121 is a deficient number, since it is larger than the sum of its proper divisors (15757694439).

40234004121 is a wasteful number, since it uses less digits than its factorization.

40234004121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145376.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 40234004121 its reverse (12140043204), we get a palindrome (52374047325).

It can be divided in two parts, 40 and 234004121, that added together give a triangular number (234004161 = T₂₁₆₃₃).

The spelling of 40234004121 in words is "forty billion, two hundred thirty-four million, four thousand, one hundred twenty-one".