40022035421 has 8 divisors (see below), whose sum is σ = 41161713240. Its totient is φ = 38885410368.

The previous prime is 40022035393. The next prime is 40022035429. The reversal of 40022035421 is 12453022004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 307125625 + 39714909796 = 17525^2 + 199286^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40022035421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40022035429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 736586 + ... + 789051.

It is an arithmetic number, because the mean of its divisors is an integer number (5145214155).

Almost surely, 2^40022035421 is an apocalyptic number.

It is an amenable number.

40022035421 is a deficient number, since it is larger than the sum of its proper divisors (1139677819).

40022035421 is a wasteful number, since it uses less digits than its factorization.

40022035421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526383.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 40022035421 its reverse (12453022004), we get a palindrome (52475057425).

The spelling of 40022035421 in words is "forty billion, twenty-two million, thirty-five thousand, four hundred twenty-one".