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542078 = 21312069
BaseRepresentation
bin10000100010101111110
31000112120222
42010111332
5114321303
615341342
74415255
oct2042576
91015528
10542078
113402a9
12221852
1315c974
1410179c
15aa938
hex8457e

542078 has 8 divisors (see below), whose sum is σ = 819720. Its totient is φ = 268840.

The previous prime is 542071. The next prime is 542081. The reversal of 542078 is 870245.

542078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542071) by changing a digit.

542078 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773 + ... + 1296.

It is an arithmetic number, because the mean of its divisors is an integer number (102465).

2542078 is an apocalyptic number.

542078 is a deficient number, since it is larger than the sum of its proper divisors (277642).

542078 is a wasteful number, since it uses less digits than its factorization.

542078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 542078 is about 736.2594651344. The cubic root of 542078 is about 81.5368496089.

The spelling of 542078 in words is "five hundred forty-two thousand, seventy-eight".

Divisors: 1 2 131 262 2069 4138 271039 542078