40325140 has 24 divisors (see below), whose sum is σ = 86749992. Its totient is φ = 15736320.

The previous prime is 40325137. The next prime is 40325147. The reversal of 40325140 is 4152304.

It can be written as a sum of positive squares in 4 ways, for example, as 559504 + 39765636 = 748^2 + 6306^2 .

It is a super-2 number, since 2×40325140² = 3252233832039200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40325147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23769 + ... + 25408.

It is an arithmetic number, because the mean of its divisors is an integer number (3614583).

Almost surely, 2^40325140 is an apocalyptic number.

It is an amenable number.

40325140 is an abundant number, since it is smaller than the sum of its proper divisors (46424852).

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

40325140 is a wasteful number, since it uses less digits than its factorization.

40325140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49227 (or 49225 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 40325140 is about 6350.2078706134. The cubic root of 40325140 is about 342.9193258576.

Adding to 40325140 its reverse (4152304), we get a palindrome (44477444).

The spelling of 40325140 in words is "forty million, three hundred twenty-five thousand, one hundred forty".