40141940 has 12 divisors (see below), whose sum is σ = 84298116. Its totient is φ = 16056768.

The previous prime is 40141921. The next prime is 40141943. The reversal of 40141940 is 4914104.

It can be written as a sum of positive squares in 2 ways, for example, as 8916196 + 31225744 = 2986^2 + 5588^2 .

It is a super-2 number, since 2×40141940² = 3222750693927200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40141943) 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, 1003529 + ... + 1003568.

It is an arithmetic number, because the mean of its divisors is an integer number (7024843).

Almost surely, 2^40141940 is an apocalyptic number.

It is an amenable number.

40141940 is an abundant number, since it is smaller than the sum of its proper divisors (44156176).

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

40141940 is a wasteful number, since it uses less digits than its factorization.

40141940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007106 (or 2007104 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 40141940 is about 6335.7667255037. The cubic root of 40141940 is about 342.3992351025.

The spelling of 40141940 in words is "forty million, one hundred forty-one thousand, nine hundred forty".