40201540 has 24 divisors (see below), whose sum is σ = 87335640. Its totient is φ = 15525888.

The previous prime is 40201537. The next prime is 40201559. The reversal of 40201540 is 4510204.

It can be written as a sum of positive squares in 4 ways, for example, as 15936064 + 24265476 = 3992^2 + 4926^2 .

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, 34077 + ... + 35236.

It is an arithmetic number, because the mean of its divisors is an integer number (3638985).

Almost surely, 2^40201540 is an apocalyptic number.

It is an amenable number.

40201540 is an abundant number, since it is smaller than the sum of its proper divisors (47134100).

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

40201540 is a wasteful number, since it uses less digits than its factorization.

40201540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69351 (or 69349 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 40201540 is about 6340.4684369532. The cubic root of 40201540 is about 342.5686082743.

Adding to 40201540 its reverse (4510204), we get a palindrome (44711744).

The spelling of 40201540 in words is "forty million, two hundred one thousand, five hundred forty".