43131242 has 64 divisors (see below), whose sum is σ = 84602880. Its totient is φ = 16008000.

The previous prime is 43131239. The next prime is 43131259. The reversal of 43131242 is 24213134.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 426992 + ... + 427092.

It is an arithmetic number, because the mean of its divisors is an integer number (1321920).

Almost surely, 2^43131242 is an apocalyptic number.

43131242 is a deficient number, since it is larger than the sum of its proper divisors (41471638).

43131242 is a wasteful number, since it uses less digits than its factorization.

43131242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227.

The product of its digits is 576, while the sum is 20.

The square root of 43131242 is about 6567.4380088433. The cubic root of 43131242 is about 350.6958726865.

Adding to 43131242 its reverse (24213134), we get a palindrome (67344376).

It can be divided in two parts, 4313 and 1242, that added together give a palindrome (5555).

The spelling of 43131242 in words is "forty-three million, one hundred thirty-one thousand, two hundred forty-two".