542221314251 has 4 divisors (see below), whose sum is σ = 542369021904. Its totient is φ = 542073606600.

The previous prime is 542221314241. The next prime is 542221314307. The reversal of 542221314251 is 152413122245.

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

It is a cyclic number.

It is not a de Polignac number, because 542221314251 - 2³⁴ = 525041445067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542221314241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73848320 + ... + 73855661.

It is an arithmetic number, because the mean of its divisors is an integer number (135592255476).

Almost surely, 2^542221314251 is an apocalyptic number.

542221314251 is a deficient number, since it is larger than the sum of its proper divisors (147707653).

542221314251 is a wasteful number, since it uses less digits than its factorization.

542221314251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147707652.

The product of its digits is 19200, while the sum is 32.

Adding to 542221314251 its reverse (152413122245), we get a palindrome (694634436496).

The spelling of 542221314251 in words is "five hundred forty-two billion, two hundred twenty-one million, three hundred fourteen thousand, two hundred fifty-one".