1261982 has 8 divisors (see below), whose sum is σ = 1903176. Its totient is φ = 627592.

The previous prime is 1261973. The next prime is 1262011. The reversal of 1261982 is 2891621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208 + ... + 1995.

It is an arithmetic number, because the mean of its divisors is an integer number (237897).

2^1261982 is an apocalyptic number.

1261982 is a deficient number, since it is larger than the sum of its proper divisors (641194).

1261982 is a wasteful number, since it uses less digits than its factorization.

1261982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3402.

The product of its digits is 1728, while the sum is 29.

The square root of 1261982 is about 1123.3797220887. The cubic root of 1261982 is about 108.0648330433.

The spelling of 1261982 in words is "one million, two hundred sixty-one thousand, nine hundred eighty-two".