1287234 has 24 divisors (see below), whose sum is σ = 3004092. Its totient is φ = 396000.

The previous prime is 1287233. The next prime is 1287239. The reversal of 1287234 is 4327821.

1287234 = T₁₉₆ + T₁₉₇ + ... + T₂₄₇.

It can be written as a sum of positive squares in 2 ways, for example, as 1265625 + 21609 = 1125^2 + 147^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1287198 and 1287207.

It is not an unprimeable number, because it can be changed into a prime (1287233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2517 + ... + 2984.

2^1287234 is an apocalyptic number.

1287234 is an abundant number, since it is smaller than the sum of its proper divisors (1716858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1287234 is a wasteful number, since it uses less digits than its factorization.

1287234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5522 (or 5519 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 1287234 is about 1134.5633521316. The cubic root of 1287234 is about 108.7808632180.

It can be divided in two parts, 1287 and 234, that added together give a square (1521 = 39²).

The spelling of 1287234 in words is "one million, two hundred eighty-seven thousand, two hundred thirty-four".