40421031 has 12 divisors (see below), whose sum is σ = 62694072. Its totient is φ = 23097648.

The previous prime is 40421027. The next prime is 40421047. The reversal of 40421031 is 13012404.

40421031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40421031 - 2² = 40421027 is a prime.

It is a super-2 number, since 2×40421031² = 3267719494205922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40421031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40421021) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 137340 + ... + 137633.

It is an arithmetic number, because the mean of its divisors is an integer number (5224506).

Almost surely, 2^40421031 is an apocalyptic number.

40421031 is a deficient number, since it is larger than the sum of its proper divisors (22273041).

40421031 is a wasteful number, since it uses less digits than its factorization.

40421031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274990 (or 274983 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 40421031 is about 6357.7536127157. The cubic root of 40421031 is about 343.1909252196.

Adding to 40421031 its reverse (13012404), we get a palindrome (53433435).

The spelling of 40421031 in words is "forty million, four hundred twenty-one thousand, thirty-one".