421441131 has 16 divisors (see below), whose sum is σ = 572106240. Its totient is φ = 275884320.

The previous prime is 421441117. The next prime is 421441159. The reversal of 421441131 is 131144124.

It is not a de Polignac number, because 421441131 - 2⁵ = 421441099 is a prime.

It is a super-2 number, since 2×421441131² = 355225253797118322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421441098 and 421441107.

It is not an unprimeable number, because it can be changed into a prime (421441231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129976 + ... + 133178.

It is an arithmetic number, because the mean of its divisors is an integer number (35756640).

Almost surely, 2^421441131 is an apocalyptic number.

421441131 is a deficient number, since it is larger than the sum of its proper divisors (150665109).

421441131 is a wasteful number, since it uses less digits than its factorization.

421441131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986.

The product of its digits is 384, while the sum is 21.

The square root of 421441131 is about 20529.0314189442. The cubic root of 421441131 is about 749.7428042550.

Adding to 421441131 its reverse (131144124), we get a palindrome (552585255).

The spelling of 421441131 in words is "four hundred twenty-one million, four hundred forty-one thousand, one hundred thirty-one".