40101252040 has 32 divisors (see below), whose sum is σ = 90317331000. Its totient is φ = 16024587264.

The previous prime is 40101252019. The next prime is 40101252067. The reversal of 40101252040 is 4025210104.

It can be written as a sum of positive squares in 4 ways, for example, as 17144759844 + 22956492196 = 130938^2 + 151514^2 .

It is a super-2 number, since 2×40101252040² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40101251999 and 40101252017.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456435 + ... + 537154.

Almost surely, 2^40101252040 is an apocalyptic number.

40101252040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40101252040 is an abundant number, since it is smaller than the sum of its proper divisors (50216078960).

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

40101252040 is a wasteful number, since it uses less digits than its factorization.

40101252040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994609 (or 994605 counting only the distinct ones).

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

Adding to 40101252040 its reverse (4025210104), we get a palindrome (44126462144).

The spelling of 40101252040 in words is "forty billion, one hundred one million, two hundred fifty-two thousand, forty".