542421202126 has 4 divisors (see below), whose sum is σ = 813631803192. Its totient is φ = 271210601062.

The previous prime is 542421202069. The next prime is 542421202139. The reversal of 542421202126 is 621202124245.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135605300530 + ... + 135605300533.

It is an arithmetic number, because the mean of its divisors is an integer number (203407950798).

Almost surely, 2^542421202126 is an apocalyptic number.

542421202126 is a deficient number, since it is larger than the sum of its proper divisors (271210601066).

542421202126 is a wasteful number, since it uses less digits than its factorization.

542421202126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271210601065.

The product of its (nonzero) digits is 15360, while the sum is 31.

The spelling of 542421202126 in words is "five hundred forty-two billion, four hundred twenty-one million, two hundred two thousand, one hundred twenty-six".