40734221 has 4 divisors (see below), whose sum is σ = 44437344. Its totient is φ = 37031100.

The previous prime is 40734203. The next prime is 40734223. The reversal of 40734221 is 12243704.

40734221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40734221 - 2¹⁴ = 40717837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40734223) 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 3 ways as a sum of consecutive naturals, for example, 1851545 + ... + 1851566.

It is an arithmetic number, because the mean of its divisors is an integer number (11109336).

Almost surely, 2^40734221 is an apocalyptic number.

It is an amenable number.

40734221 is a deficient number, since it is larger than the sum of its proper divisors (3703123).

40734221 is a wasteful number, since it uses less digits than its factorization.

40734221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703122.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 40734221 is about 6382.3366410743. The cubic root of 40734221 is about 344.0750157521.

Adding to 40734221 its reverse (12243704), we get a palindrome (52977925).

The spelling of 40734221 in words is "forty million, seven hundred thirty-four thousand, two hundred twenty-one".