1234 has 4 divisors (see below), whose sum is σ = 1854. Its totient is φ = 616.

The previous prime is 1231. The next prime is 1237. The reversal of 1234 is 4321.

Adding to 1234 its reverse (4321), we get a palindrome (5555).

1234 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4321 = 29 ⋅149.

It is an interprime number because it is at equal distance from previous prime (1231) and next prime (1237).

It can be written as a sum of positive squares in only one way, i.e., 1225 + 9 = 35^2 + 3^2 .

It is a d-powerful number, because it can be written as **1** + **3**^{4} + **2**^{7} + **4**^{5} .

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

It is a straight-line number, since its digits are in arithmetic progression.

It is a plaindrome in base 10.

It is a nialpdrome in base 11 and base 14.

It is a self number, because there is not a number *n* which added to its sum of digits gives 1234.

It is not an unprimeable number, because it can be changed into a prime (1231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307 + ... + 310.

1234 is a deficient number, since it is larger than the sum of its proper divisors (620).

1234 is an equidigital number, since it uses as much as digits as its factorization.

1234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619.

The product of its digits is 24, while the sum is 10.

The square root of 1234 is about 35.1283361405. The cubic root of 1234 is about 10.7260146688.

The spelling of 1234 in words is "one thousand, two hundred thirty-four".

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