40234240 has 108 divisors (see below), whose sum is σ = 104470884. Its totient is φ = 14794752.

The previous prime is 40234219. The next prime is 40234241. The reversal of 40234240 is 4243204.

It can be written as a sum of positive squares in 2 ways, for example, as 23193856 + 17040384 = 4816^2 + 4128^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40234241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 935659 + ... + 935701.

It is an arithmetic number, because the mean of its divisors is an integer number (967323).

Almost surely, 2^40234240 is an apocalyptic number.

40234240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40234240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52235442).

40234240 is an abundant number, since it is smaller than the sum of its proper divisors (64236644).

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

40234240 is an equidigital number, since it uses as much as digits as its factorization.

40234240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 40234240 is about 6343.0465866175. The cubic root of 40234240 is about 342.6614650622.

Adding to 40234240 its reverse (4243204), we get a palindrome (44477444).

The spelling of 40234240 in words is "forty million, two hundred thirty-four thousand, two hundred forty".