40127540 has 12 divisors (see below), whose sum is σ = 84267876. Its totient is φ = 16051008.

The previous prime is 40127513. The next prime is 40127629. The reversal of 40127540 is 4572104.

It can be written as a sum of positive squares in 2 ways, for example, as 22771984 + 17355556 = 4772^2 + 4166^2 .

It is a super-2 number, since 2×40127540² = 3220438932903200, which contains 22 as substring.

It is a congruent number.

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, 1003169 + ... + 1003208.

It is an arithmetic number, because the mean of its divisors is an integer number (7022323).

Almost surely, 2^40127540 is an apocalyptic number.

It is an amenable number.

40127540 is an abundant number, since it is smaller than the sum of its proper divisors (44140336).

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

40127540 is a wasteful number, since it uses less digits than its factorization.

40127540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006386 (or 2006384 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 40127540 is about 6334.6302180948. The cubic root of 40127540 is about 342.3582875825.

Adding to 40127540 its reverse (4572104), we get a palindrome (44699644).

The spelling of 40127540 in words is "forty million, one hundred twenty-seven thousand, five hundred forty".