40421044 has 6 divisors (see below), whose sum is σ = 70736834. Its totient is φ = 20210520.

The previous prime is 40421027. The next prime is 40421047. The reversal of 40421044 is 44012404.

It can be written as a sum of positive squares in only one way, i.e., 37822500 + 2598544 = 6150^2 + 1612^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40421047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5052627 + ... + 5052634.

Almost surely, 2^40421044 is an apocalyptic number.

It is an amenable number.

40421044 is a deficient number, since it is larger than the sum of its proper divisors (30315790).

40421044 is a wasteful number, since it uses less digits than its factorization.

40421044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10105265 (or 10105263 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 40421044 is about 6357.7546350893. The cubic root of 40421044 is about 343.1909620113.

Adding to 40421044 its reverse (44012404), we get a palindrome (84433448).

The spelling of 40421044 in words is "forty million, four hundred twenty-one thousand, forty-four".