1291230 has 24 divisors (see below), whose sum is σ = 3357432. Its totient is φ = 344304.

The previous prime is 1291229. The next prime is 1291249. The reversal of 1291230 is 321921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7084 + ... + 7263.

It is an arithmetic number, because the mean of its divisors is an integer number (139893).

2^1291230 is an apocalyptic number.

1291230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1291230 is an abundant number, since it is smaller than the sum of its proper divisors (2066202).

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

1291230 is a wasteful number, since it uses less digits than its factorization.

1291230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14360 (or 14357 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1291230 is about 1136.3230174559. The cubic root of 1291230 is about 108.8933108637.

It can be divided in two parts, 1291 and 230, that added together give a square (1521 = 39²).

The spelling of 1291230 in words is "one million, two hundred ninety-one thousand, two hundred thirty".