42000045124 has 6 divisors (see below), whose sum is σ = 73500078974. Its totient is φ = 21000022560.

The previous prime is 42000045077. The next prime is 42000045161. The reversal of 42000045124 is 42154000024.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 41746662400 + 253382724 = 204320^2 + 15918^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42000045095 and 42000045104.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5250005637 + ... + 5250005644.

Almost surely, 2^42000045124 is an apocalyptic number.

It is an amenable number.

42000045124 is a deficient number, since it is larger than the sum of its proper divisors (31500033850).

42000045124 is a wasteful number, since it uses less digits than its factorization.

42000045124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10500011285 (or 10500011283 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 42000045124 its reverse (42154000024), we get a palindrome (84154045148).

It can be divided in two parts, 420000 and 45124, that added together give a square (465124 = 682²).

The spelling of 42000045124 in words is "forty-two billion, forty-five thousand, one hundred twenty-four".