404142541 has 6 divisors (see below), whose sum is σ = 444222926. Its totient is φ = 367402200.

The previous prime is 404142539. The next prime is 404142551. The reversal of 404142541 is 145241404.

It can be written as a sum of positive squares in only one way, i.e., 398601225 + 5541316 = 19965^2 + 2354^2 .

It is not a de Polignac number, because 404142541 - 2¹ = 404142539 is a prime.

It is a super-3 number, since 3×404142541³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404142551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1669890 + ... + 1670131.

Almost surely, 2^404142541 is an apocalyptic number.

It is an amenable number.

404142541 is a deficient number, since it is larger than the sum of its proper divisors (40080385).

404142541 is a wasteful number, since it uses less digits than its factorization.

404142541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340043 (or 3340032 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 404142541 is about 20103.2967694356. The cubic root of 404142541 is about 739.3411112172.

Adding to 404142541 its reverse (145241404), we get a palindrome (549383945).

The spelling of 404142541 in words is "four hundred four million, one hundred forty-two thousand, five hundred forty-one".