4312040121442 has 4 divisors (see below), whose sum is σ = 6468060182166. Its totient is φ = 2156020060720.

The previous prime is 4312040121421. The next prime is 4312040121457. The reversal of 4312040121442 is 2441210402134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3386921248881 + 925118872561 = 1840359^2 + 961831^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4312040121442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078010030359 + ... + 1078010030362.

Almost surely, 2^{4312040121442} is an apocalyptic number.

4312040121442 is a deficient number, since it is larger than the sum of its proper divisors (2156020060724).

4312040121442 is a wasteful number, since it uses less digits than its factorization.

4312040121442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156020060723.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 4312040121442 its reverse (2441210402134), we get a palindrome (6753250523576).

The spelling of 4312040121442 in words is "four trillion, three hundred twelve billion, forty million, one hundred twenty-one thousand, four hundred forty-two".