1260090 has 64 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 309312.

The previous prime is 1260067. The next prime is 1260113. The reversal of 1260090 is 900621.

It is an interprime number because it is at equal distance from previous prime (1260067) and next prime (1260113).

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

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3331 + ... + 3689.

It is an arithmetic number, because the mean of its divisors is an integer number (56700).

2^1260090 is an apocalyptic number.

1260090 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 1260090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1814400).

1260090 is an abundant number, since it is smaller than the sum of its proper divisors (2368710).

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

1260090 is a wasteful number, since it uses less digits than its factorization.

1260090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 382 counting only the distinct ones).

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

The square root of 1260090 is about 1122.5373045026. The cubic root of 1260090 is about 108.0108013888.

The spelling of 1260090 in words is "one million, two hundred sixty thousand, ninety".