40410424021 has 4 divisors (see below), whose sum is σ = 44084098944. Its totient is φ = 36736749100.

The previous prime is 40410424009. The next prime is 40410424031. The reversal of 40410424021 is 12042401404.

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 a de Polignac number, because none of the positive numbers 2^k-40410424021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40410423983 and 40410424001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40410424031) 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, 1836837445 + ... + 1836837466.

It is an arithmetic number, because the mean of its divisors is an integer number (11021024736).

Almost surely, 2^40410424021 is an apocalyptic number.

It is an amenable number.

40410424021 is a deficient number, since it is larger than the sum of its proper divisors (3673674923).

40410424021 is a wasteful number, since it uses less digits than its factorization.

40410424021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673674922.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 40410424021 its reverse (12042401404), we get a palindrome (52452825425).

The spelling of 40410424021 in words is "forty billion, four hundred ten million, four hundred twenty-four thousand, twenty-one".