1261090 has 16 divisors (see below), whose sum is σ = 2369088. Its totient is φ = 482416.

The previous prime is 1261081. The next prime is 1261109. The reversal of 1261090 is 901621.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2512 + ... + 2971.

It is an arithmetic number, because the mean of its divisors is an integer number (148068).

2^1261090 is an apocalyptic number.

1261090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1261090 is a deficient number, since it is larger than the sum of its proper divisors (1107998).

1261090 is a wasteful number, since it uses less digits than its factorization.

1261090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5513.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1261090 is about 1122.9826356627. The cubic root of 1261090 is about 108.0393660791.

The spelling of 1261090 in words is "one million, two hundred sixty-one thousand, ninety".