40414021 has 4 divisors (see below), whose sum is σ = 40571532. Its totient is φ = 40256512.

The previous prime is 40414009. The next prime is 40414061. The reversal of 40414021 is 12041404.

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 20930625 + 19483396 = 4575^2 + 4414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40414021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40413986 and 40414004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40414061) 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, 78370 + ... + 78883.

It is an arithmetic number, because the mean of its divisors is an integer number (10142883).

Almost surely, 2^40414021 is an apocalyptic number.

It is an amenable number.

40414021 is a deficient number, since it is larger than the sum of its proper divisors (157511).

40414021 is a wasteful number, since it uses less digits than its factorization.

40414021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157510.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 40414021 is about 6357.2022934621. The cubic root of 40414021 is about 343.1710848262.

Adding to 40414021 its reverse (12041404), we get a palindrome (52455425).

The spelling of 40414021 in words is "forty million, four hundred fourteen thousand, twenty-one".