40201231240 has 16 divisors (see below), whose sum is σ = 90452770380. Its totient is φ = 16080492480.

The previous prime is 40201231211. The next prime is 40201231243. The reversal of 40201231240 is 4213210204.

It can be written as a sum of positive squares in 2 ways, for example, as 37259036676 + 2942194564 = 193026^2 + 54242^2 .

It is a super-2 number, since 2×40201231240² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40201231243) 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, 502515351 + ... + 502515430.

Almost surely, 2^40201231240 is an apocalyptic number.

40201231240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40201231240 is an abundant number, since it is smaller than the sum of its proper divisors (50251539140).

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

40201231240 is a wasteful number, since it uses less digits than its factorization.

40201231240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005030792 (or 1005030788 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 40201231240 its reverse (4213210204), we get a palindrome (44414441444).

It can be divided in two parts, 40201 and 231240, that added together give a square (271441 = 521²).

The spelling of 40201231240 in words is "forty billion, two hundred one million, two hundred thirty-one thousand, two hundred forty".