542400051 has 4 divisors (see below), whose sum is σ = 723200072. Its totient is φ = 361600032.

The previous prime is 542400031. The next prime is 542400073. The reversal of 542400051 is 150004245.

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

It is not a de Polignac number, because 542400051 - 2¹³ = 542391859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542400031) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 90400006 + ... + 90400011.

It is an arithmetic number, because the mean of its divisors is an integer number (180800018).

Almost surely, 2^542400051 is an apocalyptic number.

542400051 is a deficient number, since it is larger than the sum of its proper divisors (180800021).

542400051 is a wasteful number, since it uses less digits than its factorization.

542400051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180800020.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 542400051 is about 23289.4836997302. The cubic root of 542400051 is about 815.5299354977.

Adding to 542400051 its reverse (150004245), we get a palindrome (692404296).

The spelling of 542400051 in words is "five hundred forty-two million, four hundred thousand, fifty-one".