3124420042 has 4 divisors (see below), whose sum is σ = 4686630066. Its totient is φ = 1562210020.

The previous prime is 3124420037. The next prime is 3124420051. The reversal of 3124420042 is 2400244213.

It is a happy number.

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., 2446390521 + 678029521 = 49461^2 + 26039^2 .

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 junction number, because it is equal to n+sod(n) for n = 3124419995 and 3124420022.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781105009 + ... + 781105012.

Almost surely, 2^3124420042 is an apocalyptic number.

3124420042 is a deficient number, since it is larger than the sum of its proper divisors (1562210024).

3124420042 is a wasteful number, since it uses less digits than its factorization.

3124420042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562210023.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 3124420042 is about 55896.5118947506. The cubic root of 3124420042 is about 1461.9184204453.

Adding to 3124420042 its reverse (2400244213), we get a palindrome (5524664255).

The spelling of 3124420042 in words is "three billion, one hundred twenty-four million, four hundred twenty thousand, forty-two".