40121021410 has 16 divisors (see below), whose sum is σ = 74169672696. Its totient is φ = 15614667648.

The previous prime is 40121021341. The next prime is 40121021441. The reversal of 40121021410 is 1412012104.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 39224198601 + 896822809 = 198051^2 + 29947^2 .

It is an unprimeable number.

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, 54217227 + ... + 54217966.

Almost surely, 2^40121021410 is an apocalyptic number.

40121021410 is a deficient number, since it is larger than the sum of its proper divisors (34048651286).

40121021410 is a wasteful number, since it uses less digits than its factorization.

40121021410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108435237.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 40121021410 its reverse (1412012104), we get a palindrome (41533033514).

The spelling of 40121021410 in words is "forty billion, one hundred twenty-one million, twenty-one thousand, four hundred ten".