403144004240 has 20 divisors (see below), whose sum is σ = 937309810044. Its totient is φ = 161257601664.

The previous prime is 403144004227. The next prime is 403144004251. The reversal of 403144004240 is 42400441304.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 217558810624 + 185585193616 = 466432^2 + 430796^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×403144004240² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2519649947 + ... + 2519650106.

Almost surely, 2^403144004240 is an apocalyptic number.

403144004240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403144004240 is an abundant number, since it is smaller than the sum of its proper divisors (534165805804).

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

403144004240 is a wasteful number, since it uses less digits than its factorization.

403144004240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039300066 (or 5039300060 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 403144004240 its reverse (42400441304), we get a palindrome (445544445544).

The spelling of 403144004240 in words is "four hundred three billion, one hundred forty-four million, four thousand, two hundred forty".