1258 has 8 divisors (see below), whose sum is σ = 2052. Its totient is φ = 576.

The previous prime is 1249. The next prime is 1259. The reversal of 1258 is 8521.

It is a happy number.

1258 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 2 ways, for example, as 1089 + 169 = 33^2 + 13^2 .

It is a sliding number, since 1258 = 8 + 1250 and 1/8 + 1/1250 = 0.1258.

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

It is an alternating number because its digits alternate between odd and even.

1258 is an undulating number in base 6.

It is a plaindrome in base 7, base 10, base 12 and base 15.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1259) by changing a digit.

1258 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, 16 + ... + 52.

1258 is a deficient number, since it is larger than the sum of its proper divisors (794).

1258 is a wasteful number, since it uses less digits than its factorization.

1258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56.

The product of its digits is 80, while the sum is 16.

The square root of 1258 is about 35.4682957019. The cubic root of 1258 is about 10.7951052351.

Adding to 1258 its reverse (8521), we get a palindrome (9779).

It can be divided in two parts, 125 and 8, that multiplied together give a cube (1000 = 10^{3}).

The spelling of 1258 in words is "one thousand, two hundred fifty-eight".

• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.103 sec. • engine limits •