40401030020 has 48 divisors (see below), whose sum is σ = 91392814128. Its totient is φ = 14913331200.

The previous prime is 40401030017. The next prime is 40401030041. The reversal of 40401030020 is 2003010404.

It can be written as a sum of positive squares in 8 ways, for example, as 3349399876 + 37051630144 = 57874^2 + 192488^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40401029977 and 40401030004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1067420 + ... + 1104620.

It is an arithmetic number, because the mean of its divisors is an integer number (1904016961).

Almost surely, 2^40401030020 is an apocalyptic number.

It is an amenable number.

40401030020 is an abundant number, since it is smaller than the sum of its proper divisors (50991784108).

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

40401030020 is a wasteful number, since it uses less digits than its factorization.

40401030020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41400 (or 41398 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 40401030020 its reverse (2003010404), we get a palindrome (42404040424).

The spelling of 40401030020 in words is "forty billion, four hundred one million, thirty thousand, twenty".