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BaseRepresentation
bin100010110101000001
321020200121
4202311001
514031112
63020241
71132624
oct426501
9236617
10142657
11981a9
126a681
134cc18
1439dbb
152c407
hex22d41

142657 has 2 divisors, whose sum is σ = 142658. Its totient is φ = 142656.

The previous prime is 142619. The next prime is 142673. The reversal of 142657 is 756241.

Adding to 142657 its reverse (756241), we get a palindrome (898898).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80656 + 62001 = 284^2 + 249^2 .

It is a cyclic number.

It is not a de Polignac number, because 142657 - 27 = 142529 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (142607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71328 + 71329.

It is an arithmetic number, because the mean of its divisors is an integer number (71329).

2142657 is an apocalyptic number.

It is an amenable number.

142657 is a deficient number, since it is larger than the sum of its proper divisors (1).

142657 is an equidigital number, since it uses as much as digits as its factorization.

142657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 25.

The square root of 142657 is about 377.6996160972. The cubic root of 142657 is about 52.2513716511.

The spelling of 142657 in words is "one hundred forty-two thousand, six hundred fifty-seven".