1261137 has 8 divisors (see below), whose sum is σ = 1694880. Its totient is φ = 834080.

The previous prime is 1261133. The next prime is 1261157. The reversal of 1261137 is 7311621.

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

It is a cyclic number.

It is not a de Polignac number, because 1261137 - 2² = 1261133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1261133) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1212 + ... + 1997.

It is an arithmetic number, because the mean of its divisors is an integer number (211860).

2^1261137 is an apocalyptic number.

It is an amenable number.

1261137 is a deficient number, since it is larger than the sum of its proper divisors (433743).

1261137 is a wasteful number, since it uses less digits than its factorization.

1261137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3343.

The product of its digits is 252, while the sum is 21.

The square root of 1261137 is about 1123.0035618822. The cubic root of 1261137 is about 108.0407082479.

Adding to 1261137 its reverse (7311621), we get a palindrome (8572758).

The spelling of 1261137 in words is "one million, two hundred sixty-one thousand, one hundred thirty-seven".