400202501140 has 96 divisors (see below), whose sum is σ = 921424087584. Its totient is φ = 145105551360.

The previous prime is 400202501129. The next prime is 400202501161. The reversal of 400202501140 is 41105202004.

It can be written as a sum of positive squares in 16 ways, for example, as 302656220164 + 97546280976 = 550142^2 + 312324^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9765172 + ... + 9806068.

It is an arithmetic number, because the mean of its divisors is an integer number (9598167579).

Almost surely, 2^400202501140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400202501140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460712043792).

400202501140 is an abundant number, since it is smaller than the sum of its proper divisors (521221586444).

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

400202501140 is a wasteful number, since it uses less digits than its factorization.

400202501140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41597 (or 41595 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 400202501140 its reverse (41105202004), we get a palindrome (441307703144).

The spelling of 400202501140 in words is "four hundred billion, two hundred two million, five hundred one thousand, one hundred forty".