40100421304421 has 2 divisors, whose sum is σ = 40100421304422. Its totient is φ = 40100421304420.

The previous prime is 40100421304409. The next prime is 40100421304481. The reversal of 40100421304421 is 12440312400104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38055203832100 + 2045217472321 = 6168890^2 + 1430111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40100421304421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40100421304481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20050210652210 + 20050210652211.

It is an arithmetic number, because the mean of its divisors is an integer number (20050210652211).

Almost surely, 2^{40100421304421} is an apocalyptic number.

It is an amenable number.

40100421304421 is a deficient number, since it is larger than the sum of its proper divisors (1).

40100421304421 is an equidigital number, since it uses as much as digits as its factorization.

40100421304421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 40100421304421 its reverse (12440312400104), we get a palindrome (52540733704525).

The spelling of 40100421304421 in words is "forty trillion, one hundred billion, four hundred twenty-one million, three hundred four thousand, four hundred twenty-one".