1261898 has 16 divisors (see below), whose sum is σ = 2116800. Its totient is φ = 559200.

The previous prime is 1261891. The next prime is 1261901. The reversal of 1261898 is 8981621.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1261891) 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, 203 + ... + 1601.

It is an arithmetic number, because the mean of its divisors is an integer number (132300).

2^1261898 is an apocalyptic number.

1261898 is a deficient number, since it is larger than the sum of its proper divisors (854902).

1261898 is a wasteful number, since it uses less digits than its factorization.

1261898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453.

The product of its digits is 6912, while the sum is 35.

The square root of 1261898 is about 1123.3423342864. The cubic root of 1261898 is about 108.0624353209.

The spelling of 1261898 in words is "one million, two hundred sixty-one thousand, eight hundred ninety-eight".