542045645 has 8 divisors (see below), whose sum is σ = 650724504. Its totient is φ = 433456704.

The previous prime is 542045627. The next prime is 542045683. The reversal of 542045645 is 546540245.

It can be written as a sum of positive squares in 4 ways, for example, as 59320804 + 482724841 = 7702^2 + 21971^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542045645 is a prime.

It is a super-3 number, since 3×542045645³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8414 + ... + 33983.

It is an arithmetic number, because the mean of its divisors is an integer number (81340563).

Almost surely, 2^542045645 is an apocalyptic number.

It is an amenable number.

542045645 is a deficient number, since it is larger than the sum of its proper divisors (108678859).

542045645 is a wasteful number, since it uses less digits than its factorization.

542045645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44959.

The product of its (nonzero) digits is 96000, while the sum is 35.

The square root of 542045645 is about 23281.8737433223. The cubic root of 542045645 is about 815.3522734716.

The spelling of 542045645 in words is "five hundred forty-two million, forty-five thousand, six hundred forty-five".