42154342544 has 10 divisors (see below), whose sum is σ = 81674038710. Its totient is φ = 21077171264.

The previous prime is 42154342543. The next prime is 42154342561. The reversal of 42154342544 is 44524345124.

It can be written as a sum of positive squares in only one way, i.e., 22135488400 + 20018854144 = 148780^2 + 141488^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42154342498 and 42154342507.

It is not an unprimeable number, because it can be changed into a prime (42154342541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1317323189 + ... + 1317323220.

It is an arithmetic number, because the mean of its divisors is an integer number (8167403871).

Almost surely, 2^42154342544 is an apocalyptic number.

It is an amenable number.

42154342544 is a deficient number, since it is larger than the sum of its proper divisors (39519696166).

42154342544 is a wasteful number, since it uses less digits than its factorization.

42154342544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634646417 (or 2634646411 counting only the distinct ones).

The product of its digits is 307200, while the sum is 38.

Adding to 42154342544 its reverse (44524345124), we get a palindrome (86678687668).

The spelling of 42154342544 in words is "forty-two billion, one hundred fifty-four million, three hundred forty-two thousand, five hundred forty-four".