442124131 has 4 divisors (see below), whose sum is σ = 443546064. Its totient is φ = 440702200.

The previous prime is 442124119. The next prime is 442124149. The reversal of 442124131 is 131421244.

It is a happy number.

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 442124131 - 2⁷ = 442124003 is a prime.

It is a super-2 number, since 2×442124131² = 390947494425010322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442124161) 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, 710500 + ... + 711121.

It is an arithmetic number, because the mean of its divisors is an integer number (110886516).

Almost surely, 2^442124131 is an apocalyptic number.

442124131 is a deficient number, since it is larger than the sum of its proper divisors (1421933).

442124131 is a wasteful number, since it uses less digits than its factorization.

442124131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421932.

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

The square root of 442124131 is about 21026.7479891685. The cubic root of 442124131 is about 761.8124626032.

Adding to 442124131 its reverse (131421244), we get a palindrome (573545375).

The spelling of 442124131 in words is "four hundred forty-two million, one hundred twenty-four thousand, one hundred thirty-one".