40611421 has 4 divisors (see below), whose sum is σ = 41277244. Its totient is φ = 39945600.

The previous prime is 40611401. The next prime is 40611449. The reversal of 40611421 is 12411604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7778521 + 32832900 = 2789^2 + 5730^2 .

It is a cyclic number.

It is not a de Polignac number, because 40611421 - 2¹³ = 40603229 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 (40611401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332820 + ... + 332941.

It is an arithmetic number, because the mean of its divisors is an integer number (10319311).

Almost surely, 2^40611421 is an apocalyptic number.

It is an amenable number.

40611421 is a deficient number, since it is larger than the sum of its proper divisors (665823).

40611421 is an equidigital number, since it uses as much as digits as its factorization.

40611421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665822.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 40611421 is about 6372.7090785631. The cubic root of 40611421 is about 343.7289108384.

The spelling of 40611421 in words is "forty million, six hundred eleven thousand, four hundred twenty-one".