1261970 has 16 divisors (see below), whose sum is σ = 2296728. Its totient is φ = 499200.

The previous prime is 1261969. The next prime is 1261973. The reversal of 1261970 is 791621.

It can be written as a sum of positive squares in 4 ways, for example, as 534361 + 727609 = 731^2 + 853^2 .

It is not an unprimeable number, because it can be changed into a prime (1261973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320 + ... + 1620.

2^1261970 is an apocalyptic number.

1261970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1261970 is a deficient number, since it is larger than the sum of its proper divisors (1034758).

1261970 is a wasteful number, since it uses less digits than its factorization.

1261970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1261970 is about 1123.3743810502. The cubic root of 1261970 is about 108.0644905180.

The spelling of 1261970 in words is "one million, two hundred sixty-one thousand, nine hundred seventy".