40242434121 has 8 divisors (see below), whose sum is σ = 59618420960. Its totient is φ = 26828289396.

The previous prime is 40242434117. The next prime is 40242434149. The reversal of 40242434121 is 12143424204.

40242434121 is a `hidden beast` number, since 4 + 0 + 2 + 4 + 243 + 412 + 1 = 666.

It is not a de Polignac number, because 40242434121 - 2² = 40242434117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1490460523 = 40242434121 / (4 + 0 + 2 + 4 + 2 + 4 + 3 + 4 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40242434161) 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, 745230235 + ... + 745230288.

It is an arithmetic number, because the mean of its divisors is an integer number (7452302620).

Almost surely, 2^40242434121 is an apocalyptic number.

It is an amenable number.

40242434121 is a deficient number, since it is larger than the sum of its proper divisors (19375986839).

40242434121 is a wasteful number, since it uses less digits than its factorization.

40242434121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490460532 (or 1490460526 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 40242434121 its reverse (12143424204), we get a palindrome (52385858325).

The spelling of 40242434121 in words is "forty billion, two hundred forty-two million, four hundred thirty-four thousand, one hundred twenty-one".