43212542242 has 4 divisors (see below), whose sum is σ = 64818813366. Its totient is φ = 21606271120.

The previous prime is 43212542207. The next prime is 43212542257. The reversal of 43212542242 is 24224521234.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24224521234 = 2 ⋅12112260617.

It can be written as a sum of positive squares in only one way, i.e., 40558334881 + 2654207361 = 201391^2 + 51519^2 .

It is a super-4 number, since 4×43212542242⁴ (a number of 44 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10803135559 + ... + 10803135562.

Almost surely, 2^43212542242 is an apocalyptic number.

43212542242 is a deficient number, since it is larger than the sum of its proper divisors (21606271124).

43212542242 is a wasteful number, since it uses less digits than its factorization.

43212542242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21606271123.

The product of its digits is 30720, while the sum is 31.

The spelling of 43212542242 in words is "forty-three billion, two hundred twelve million, five hundred forty-two thousand, two hundred forty-two".