40421436 has 96 divisors (see below), whose sum is σ = 110315520. Its totient is φ = 11390400.

The previous prime is 40421413. The next prime is 40421443. The reversal of 40421436 is 63412404.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 177955 + ... + 178181.

It is an arithmetic number, because the mean of its divisors is an integer number (1149120).

Almost surely, 2^40421436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40421436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55157760).

40421436 is an abundant number, since it is smaller than the sum of its proper divisors (69894084).

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

40421436 is a wasteful number, since it uses less digits than its factorization.

40421436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 40421436 is about 6357.7854635085. The cubic root of 40421436 is about 343.1920714204.

The spelling of 40421436 in words is "forty million, four hundred twenty-one thousand, four hundred thirty-six".