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142742 = 2149479
BaseRepresentation
bin100010110110010110
321020210202
4202312112
514031432
63020502
71133105
oct426626
9236722
10142742
1198276
126a732
134cc82
143a03c
152c462
hex22d96

142742 has 8 divisors (see below), whose sum is σ = 216000. Its totient is φ = 70744.

The previous prime is 142733. The next prime is 142757. The reversal of 142742 is 247241.

142742 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 d-powerful number, because it can be written as 1 + 4 + 76 + 29 + 47 + 213 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59 + ... + 537.

It is an arithmetic number, because the mean of its divisors is an integer number (27000).

2142742 is an apocalyptic number.

142742 is a deficient number, since it is larger than the sum of its proper divisors (73258).

142742 is a wasteful number, since it uses less digits than its factorization.

142742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630.

The product of its digits is 448, while the sum is 20.

The square root of 142742 is about 377.8121226218. The cubic root of 142742 is about 52.2617473186.

Adding to 142742 its reverse (247241), we get a palindrome (389983).

The spelling of 142742 in words is "one hundred forty-two thousand, seven hundred forty-two", and thus it is an iban number.

Divisors: 1 2 149 298 479 958 71371 142742