40431140 has 24 divisors (see below), whose sum is σ = 85095360. Its totient is φ = 16136288.

The previous prime is 40431119. The next prime is 40431199. The reversal of 40431140 is 4113404.

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, 8051 + ... + 12069.

It is an arithmetic number, because the mean of its divisors is an integer number (3545640).

Almost surely, 2^40431140 is an apocalyptic number.

It is an amenable number.

40431140 is an abundant number, since it is smaller than the sum of its proper divisors (44664220).

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

40431140 is a wasteful number, since it uses less digits than its factorization.

40431140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4531 (or 4529 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 40431140 is about 6358.5485765228. The cubic root of 40431140 is about 343.2195326697.

Adding to 40431140 its reverse (4113404), we get a palindrome (44544544).

The spelling of 40431140 in words is "forty million, four hundred thirty-one thousand, one hundred forty".