1309050 has 36 divisors (see below), whose sum is σ = 3518190. Its totient is φ = 348960.

The previous prime is 1309039. The next prime is 1309057. The reversal of 1309050 is 509031.

It can be written as a sum of positive squares in 3 ways, for example, as 1172889 + 136161 = 1083^2 + 369^2 .

It is a super-2 number, since 2×1309050² = 3427223805000, which contains 22 as substring.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1309057) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1005 + ... + 1904.

2^1309050 is an apocalyptic number.

1309050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1309050 is an abundant number, since it is smaller than the sum of its proper divisors (2209140).

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

1309050 is a wasteful number, since it uses less digits than its factorization.

1309050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2927 (or 2919 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The square root of 1309050 is about 1144.1372295315. The cubic root of 1309050 is about 109.3919619952.

It can be divided in two parts, 130 and 9050, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 1309050 in words is "one million, three hundred nine thousand, fifty".