40424323121251 has 8 divisors (see below), whose sum is σ = 40849212418560. Its totient is φ = 40000057288392.

The previous prime is 40424323121249. The next prime is 40424323121291. The reversal of 40424323121251 is 15212132342404.

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 40424323121251 - 2¹ = 40424323121249 is a prime.

It is a super-2 number, since 2×40424323121251² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40424323121291) 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 7 ways as a sum of consecutive naturals, for example, 155735755 + ... + 155995108.

It is an arithmetic number, because the mean of its divisors is an integer number (5106151552320).

Almost surely, 2^{40424323121251} is an apocalyptic number.

40424323121251 is a deficient number, since it is larger than the sum of its proper divisors (424889297309).

40424323121251 is a wasteful number, since it uses less digits than its factorization.

40424323121251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311732225.

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 40424323121251 its reverse (15212132342404), we get a palindrome (55636455463655).

The spelling of 40424323121251 in words is "forty trillion, four hundred twenty-four billion, three hundred twenty-three million, one hundred twenty-one thousand, two hundred fifty-one".