1284150 has 48 divisors (see below), whose sum is σ = 3642624. Its totient is φ = 293280.

The previous prime is 1284131. The next prime is 1284169. The reversal of 1284150 is 514821.

It is an interprime number because it is at equal distance from previous prime (1284131) and next prime (1284169).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 439 + ... + 1661.

It is an arithmetic number, because the mean of its divisors is an integer number (75888).

2^1284150 is an apocalyptic number.

1284150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1284150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1821312).

1284150 is an abundant number, since it is smaller than the sum of its proper divisors (2358474).

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

1284150 is a wasteful number, since it uses less digits than its factorization.

1284150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245 (or 1240 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1284150 is about 1133.2034239271. The cubic root of 1284150 is about 108.6939200883.

Adding to 1284150 its reverse (514821), we get a palindrome (1798971).

It can be divided in two parts, 128 and 4150, that added together give a triangular number (4278 = T₉₂).

The spelling of 1284150 in words is "one million, two hundred eighty-four thousand, one hundred fifty".