42154336426 has 4 divisors (see below), whose sum is σ = 63231504642. Its totient is φ = 21077168212.

The previous prime is 42154336417. The next prime is 42154336439. The reversal of 42154336426 is 62463345124.

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., 29104701201 + 13049635225 = 170601^2 + 114235^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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, 10538584105 + ... + 10538584108.

Almost surely, 2^42154336426 is an apocalyptic number.

42154336426 is a deficient number, since it is larger than the sum of its proper divisors (21077168216).

42154336426 is a wasteful number, since it uses less digits than its factorization.

42154336426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21077168215.

The product of its digits is 414720, while the sum is 40.

The spelling of 42154336426 in words is "forty-two billion, one hundred fifty-four million, three hundred thirty-six thousand, four hundred twenty-six".