542603231626 has 4 divisors (see below), whose sum is σ = 813904847442. Its totient is φ = 271301615812.

The previous prime is 542603231617. The next prime is 542603231629. The reversal of 542603231626 is 626132306245.

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., 514735937401 + 27867294225 = 717451^2 + 166935^2 .

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 not an unprimeable number, because it can be changed into a prime (542603231629) by changing a digit.

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, 135650807905 + ... + 135650807908.

Almost surely, 2^542603231626 is an apocalyptic number.

542603231626 is a deficient number, since it is larger than the sum of its proper divisors (271301615816).

542603231626 is a wasteful number, since it uses less digits than its factorization.

542603231626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271301615815.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 542603231626 in words is "five hundred forty-two billion, six hundred three million, two hundred thirty-one thousand, six hundred twenty-six".