542253645 has 12 divisors (see below), whose sum is σ = 939906396. Its totient is φ = 289201920.

The previous prime is 542253631. The next prime is 542253661. The reversal of 542253645 is 546352245.

542253645 is a `hidden beast` number, since 5 + 4 + 2 + 2 + 5 + 3 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 320660649 + 221592996 = 17907^2 + 14886^2 .

It is not a de Polignac number, because 542253645 - 2¹² = 542249549 is a prime.

It is a super-3 number, since 3×542253645³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6024996 + ... + 6025085.

It is an arithmetic number, because the mean of its divisors is an integer number (78325533).

Almost surely, 2^542253645 is an apocalyptic number.

It is an amenable number.

542253645 is a deficient number, since it is larger than the sum of its proper divisors (397652751).

542253645 is a wasteful number, since it uses less digits than its factorization.

542253645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12050092 (or 12050089 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The square root of 542253645 is about 23286.3403092886. The cubic root of 542253645 is about 815.4565522572.

The spelling of 542253645 in words is "five hundred forty-two million, two hundred fifty-three thousand, six hundred forty-five".