40012340421 has 8 divisors (see below), whose sum is σ = 53352704160. Its totient is φ = 26673435152.

The previous prime is 40012340393. The next prime is 40012340441. The reversal of 40012340421 is 12404321004.

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

It is a cyclic number.

It is not a de Polignac number, because 40012340421 - 2¹⁹ = 40011816133 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40012340441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298911 + ... + 411548.

It is an arithmetic number, because the mean of its divisors is an integer number (6669088020).

Almost surely, 2^40012340421 is an apocalyptic number.

It is an amenable number.

40012340421 is a deficient number, since it is larger than the sum of its proper divisors (13340363739).

40012340421 is a wasteful number, since it uses less digits than its factorization.

40012340421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729235.

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

Adding to 40012340421 its reverse (12404321004), we get a palindrome (52416661425).

The spelling of 40012340421 in words is "forty billion, twelve million, three hundred forty thousand, four hundred twenty-one".