542250650604021 has 4 divisors (see below), whose sum is σ = 723000867472032. Its totient is φ = 361500433736012.

The previous prime is 542250650604011. The next prime is 542250650604031. The reversal of 542250650604021 is 120406056052245.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (542250650604011) and next prime (542250650604031).

It is a cyclic number.

It is not a de Polignac number, because 542250650604021 - 2⁹ = 542250650603509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542250650604011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90375108434001 + ... + 90375108434006.

It is an arithmetic number, because the mean of its divisors is an integer number (180750216868008).

Almost surely, 2^{542250650604021} is an apocalyptic number.

It is an amenable number.

542250650604021 is a deficient number, since it is larger than the sum of its proper divisors (180750216868011).

542250650604021 is a wasteful number, since it uses less digits than its factorization.

542250650604021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180750216868010.

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 542250650604021 in words is "five hundred forty-two trillion, two hundred fifty billion, six hundred fifty million, six hundred four thousand, twenty-one".