542545 has 8 divisors (see below), whose sum is σ = 685440. Its totient is φ = 411120.

The previous prime is 542539. The next prime is 542551. The reversal of 542545 is 545245.

It is an interprime number because it is at equal distance from previous prime (542539) and next prime (542551).

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

It is not a de Polignac number, because 542545 - 2³ = 542537 is a prime.

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, 2761 + ... + 2950.

It is an arithmetic number, because the mean of its divisors is an integer number (85680).

2⁵⁴²⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

542545 is a deficient number, since it is larger than the sum of its proper divisors (142895).

542545 is a wasteful number, since it uses less digits than its factorization.

542545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5735.

The product of its digits is 4000, while the sum is 25.

The square root of 542545 is about 736.5765404899. The cubic root of 542545 is about 81.5602575437.

The spelling of 542545 in words is "five hundred forty-two thousand, five hundred forty-five".