40000323121 has 8 divisors (see below), whose sum is σ = 43702740288. Its totient is φ = 36308910000.

The previous prime is 40000323107. The next prime is 40000323127. The reversal of 40000323121 is 12132300004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40000323121 - 2⁵ = 40000323089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40000323095 and 40000323104.

It is not an unprimeable number, because it can be changed into a prime (40000323127) 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, 2743405 + ... + 2757946.

It is an arithmetic number, because the mean of its divisors is an integer number (5462842536).

Almost surely, 2^40000323121 is an apocalyptic number.

It is an amenable number.

40000323121 is a deficient number, since it is larger than the sum of its proper divisors (3702417167).

40000323121 is a wasteful number, since it uses less digits than its factorization.

40000323121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5502023.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 40000323121 its reverse (12132300004), we get a palindrome (52132623125).

The spelling of 40000323121 in words is "forty billion, three hundred twenty-three thousand, one hundred twenty-one".