40423152 has 80 divisors (see below), whose sum is σ = 130205952. Its totient is φ = 10498560.

The previous prime is 40423147. The next prime is 40423181. The reversal of 40423152 is 25132404.

40423152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1773 + ... + 9164.

Almost surely, 2^40423152 is an apocalyptic number.

40423152 is a gapful number since it is divisible by the number (42) 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 40423152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65102976).

40423152 is an abundant number, since it is smaller than the sum of its proper divisors (89782800).

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

40423152 is a wasteful number, since it uses less digits than its factorization.

40423152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10966 (or 10960 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 40423152 is about 6357.9204147268. The cubic root of 40423152 is about 343.1969278310.

Adding to 40423152 its reverse (25132404), we get a palindrome (65555556).

The spelling of 40423152 in words is "forty million, four hundred twenty-three thousand, one hundred fifty-two".