40102041220 has 12 divisors (see below), whose sum is σ = 84214286604. Its totient is φ = 16040816480.

The previous prime is 40102041143. The next prime is 40102041229. The reversal of 40102041220 is 2214020104.

It can be written as a sum of positive squares in 2 ways, for example, as 31283704384 + 8818336836 = 176872^2 + 93906^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40102041194 and 40102041203.

It is not an unprimeable number, because it can be changed into a prime (40102041229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1002551011 + ... + 1002551050.

It is an arithmetic number, because the mean of its divisors is an integer number (7017857217).

Almost surely, 2^40102041220 is an apocalyptic number.

It is an amenable number.

40102041220 is an abundant number, since it is smaller than the sum of its proper divisors (44112245384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40102041220 is a wasteful number, since it uses less digits than its factorization.

40102041220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005102070 (or 2005102068 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 40102041220 its reverse (2214020104), we get a palindrome (42316061324).

The spelling of 40102041220 in words is "forty billion, one hundred two million, forty-one thousand, two hundred twenty".