40421011 has 4 divisors (see below), whose sum is σ = 40813552. Its totient is φ = 40028472.

The previous prime is 40421009. The next prime is 40421021. The reversal of 40421011 is 11012404.

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

It is a cyclic number.

It is not a de Polignac number, because 40421011 - 2¹ = 40421009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40420982 and 40421000.

It is not an unprimeable number, because it can be changed into a prime (40421021) 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, 196116 + ... + 196321.

It is an arithmetic number, because the mean of its divisors is an integer number (10203388).

Almost surely, 2^40421011 is an apocalyptic number.

40421011 is a deficient number, since it is larger than the sum of its proper divisors (392541).

40421011 is a wasteful number, since it uses less digits than its factorization.

40421011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392540.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 40421011 is about 6357.7520398329. The cubic root of 40421011 is about 343.1908686169.

Adding to 40421011 its reverse (11012404), we get a palindrome (51433415).

The spelling of 40421011 in words is "forty million, four hundred twenty-one thousand, eleven".