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542445 = 3529243
BaseRepresentation
bin10000100011011101101
31000120002120
42010123231
5114324240
615343153
74416321
oct2043355
91016076
10542445
11340602
12221ab9
1315cb97
14101981
15aaad0
hex846ed

542445 has 24 divisors (see below), whose sum is σ = 919776. Its totient is φ = 272832.

The previous prime is 542441. The next prime is 542447. The reversal of 542445 is 544245.

542445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 542445 - 22 = 542441 is a prime.

Its product of digits (3200) is a multiple of the sum of its prime divisors (80).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12594 + ... + 12636.

It is an arithmetic number, because the mean of its divisors is an integer number (38324).

2542445 is an apocalyptic number.

It is an amenable number.

542445 is a deficient number, since it is larger than the sum of its proper divisors (377331).

542445 is a wasteful number, since it uses less digits than its factorization.

542445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 80 counting only the distinct ones).

The product of its digits is 3200, while the sum is 24.

The square root of 542445 is about 736.5086557536. The cubic root of 542445 is about 81.5552462685. Note that the first 3 decimals are identical.

The spelling of 542445 in words is "five hundred forty-two thousand, four hundred forty-five".

Divisors: 1 3 5 15 29 43 87 129 145 215 435 645 841 1247 2523 3741 4205 6235 12615 18705 36163 108489 180815 542445