Search a number
-
+
542779 = 3117509
BaseRepresentation
bin10000100100000111011
31000120112221
42010200323
5114332104
615344511
74420306
oct2044073
91016487
10542779
11340886
12222137
13160093
14101b3d
15aac54
hex8483b

542779 has 4 divisors (see below), whose sum is σ = 560320. Its totient is φ = 525240.

The previous prime is 542771. The next prime is 542783. The reversal of 542779 is 977245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 542779 - 23 = 542771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8724 + ... + 8785.

It is an arithmetic number, because the mean of its divisors is an integer number (140080).

2542779 is an apocalyptic number.

542779 is a deficient number, since it is larger than the sum of its proper divisors (17541).

542779 is a wasteful number, since it uses less digits than its factorization.

542779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17540.

The product of its digits is 17640, while the sum is 34.

The square root of 542779 is about 736.7353663291. The cubic root of 542779 is about 81.5719815218.

The spelling of 542779 in words is "five hundred forty-two thousand, seven hundred seventy-nine".

Divisors: 1 31 17509 542779