40442420473 has 16 divisors (see below), whose sum is σ = 49833463680. Its totient is φ = 31960999296.

The previous prime is 40442420387. The next prime is 40442420483. The reversal of 40442420473 is 37402424404.

It is a cyclic number.

It is not a de Polignac number, because 40442420473 - 2¹⁷ = 40442289401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40442420483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181303 + ... + 337276.

It is an arithmetic number, because the mean of its divisors is an integer number (3114591480).

Almost surely, 2^40442420473 is an apocalyptic number.

It is an amenable number.

40442420473 is a deficient number, since it is larger than the sum of its proper divisors (9391043207).

40442420473 is a wasteful number, since it uses less digits than its factorization.

40442420473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519456.

The product of its (nonzero) digits is 86016, while the sum is 34.

Adding to 40442420473 its reverse (37402424404), we get a palindrome (77844844877).

The spelling of 40442420473 in words is "forty billion, four hundred forty-two million, four hundred twenty thousand, four hundred seventy-three".