40434140 has 24 divisors (see below), whose sum is σ = 85034880. Its totient is φ = 16150208.

The previous prime is 40434083. The next prime is 40434151. The reversal of 40434140 is 4143404.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 21269 + ... + 23091.

It is an arithmetic number, because the mean of its divisors is an integer number (3543120).

Almost surely, 2^40434140 is an apocalyptic number.

It is an amenable number.

40434140 is an abundant number, since it is smaller than the sum of its proper divisors (44600740).

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

40434140 is a wasteful number, since it uses less digits than its factorization.

40434140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941 (or 2939 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40434140 is about 6358.7844750392. The cubic root of 40434140 is about 343.2280214495.

Adding to 40434140 its reverse (4143404), we get a palindrome (44577544).

The spelling of 40434140 in words is "forty million, four hundred thirty-four thousand, one hundred forty".