1249928 has 8 divisors (see below), whose sum is σ = 2343630. Its totient is φ = 624960.

The previous prime is 1249921. The next prime is 1249939. The reversal of 1249928 is 8299421.

It can be written as a sum of positive squares in only one way, i.e., 1249924 + 4 = 1118^2 + 2^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1249921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78113 + ... + 78128.

2^1249928 is an apocalyptic number.

It is an amenable number.

1249928 is a deficient number, since it is larger than the sum of its proper divisors (1093702).

1249928 is a wasteful number, since it uses less digits than its factorization.

1249928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156247 (or 156243 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 1249928 is about 1118.0017889073. The cubic root of 1249928 is about 107.7196662046.

It can be divided in two parts, 124992 and 8, that added together give a cube (125000 = 50³).

The spelling of 1249928 in words is "one million, two hundred forty-nine thousand, nine hundred twenty-eight".