542236503645 has 24 divisors (see below), whose sum is σ = 940797231192. Its totient is φ = 288909532800.

The previous prime is 542236503619. The next prime is 542236503661. The reversal of 542236503645 is 546305632245.

542236503645 is a `hidden beast` number, since 5 + 4 + 2 + 236 + 50 + 364 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 74080863684 + 468155639961 = 272178^2 + 684219^2 .

It is not a de Polignac number, because 542236503645 - 2²² = 542232309341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 542236503645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5854986 + ... + 5946875.

It is an arithmetic number, because the mean of its divisors is an integer number (39199884633).

Almost surely, 2^542236503645 is an apocalyptic number.

It is an amenable number.

542236503645 is a deficient number, since it is larger than the sum of its proper divisors (398560727547).

542236503645 is a wasteful number, since it uses less digits than its factorization.

542236503645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11802893 (or 11802890 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 45.

The spelling of 542236503645 in words is "five hundred forty-two billion, two hundred thirty-six million, five hundred three thousand, six hundred forty-five".