42145243642 has 16 divisors (see below), whose sum is σ = 66830736960. Its totient is φ = 19877851872.

The previous prime is 42145243639. The next prime is 42145243709. The reversal of 42145243642 is 24634254124.

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 in 7 ways as a sum of consecutive naturals, for example, 2371158 + ... + 2388865.

It is an arithmetic number, because the mean of its divisors is an integer number (4176921060).

Almost surely, 2^42145243642 is an apocalyptic number.

42145243642 is a deficient number, since it is larger than the sum of its proper divisors (24685493318).

42145243642 is a wasteful number, since it uses less digits than its factorization.

42145243642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4760277.

The product of its digits is 184320, while the sum is 37.

Adding to 42145243642 its reverse (24634254124), we get a palindrome (66779497766).

The spelling of 42145243642 in words is "forty-two billion, one hundred forty-five million, two hundred forty-three thousand, six hundred forty-two".