1261370 has 16 divisors (see below), whose sum is σ = 2477088. Its totient is φ = 458640.

The previous prime is 1261363. The next prime is 1261373. The reversal of 1261370 is 731621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1261373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5624 + ... + 5843.

It is an arithmetic number, because the mean of its divisors is an integer number (154818).

2^1261370 is an apocalyptic number.

1261370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1261370 is a deficient number, since it is larger than the sum of its proper divisors (1215718).

1261370 is a wasteful number, since it uses less digits than its factorization.

1261370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11485.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 1261370 is about 1123.1072967442. The cubic root of 1261370 is about 108.0473614862.

Adding to 1261370 its reverse (731621), we get a palindrome (1992991).

The spelling of 1261370 in words is "one million, two hundred sixty-one thousand, three hundred seventy".