406042141 has 4 divisors (see below), whose sum is σ = 427412800. Its totient is φ = 384671484.

The previous prime is 406042139. The next prime is 406042157. The reversal of 406042141 is 141240604.

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 not a de Polignac number, because 406042141 - 2¹ = 406042139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406042111) 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, 10685301 + ... + 10685338.

It is an arithmetic number, because the mean of its divisors is an integer number (106853200).

Almost surely, 2^406042141 is an apocalyptic number.

It is an amenable number.

406042141 is a deficient number, since it is larger than the sum of its proper divisors (21370659).

406042141 is a wasteful number, since it uses less digits than its factorization.

406042141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21370658.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 406042141 is about 20150.4873638332. The cubic root of 406042141 is about 740.4976814050.

Adding to 406042141 its reverse (141240604), we get a palindrome (547282745).

The spelling of 406042141 in words is "four hundred six million, forty-two thousand, one hundred forty-one".