1249128 has 32 divisors (see below), whose sum is σ = 3470400. Its totient is φ = 416304.

The previous prime is 1249121. The next prime is 1249133. The reversal of 1249128 is 8219421.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249121) 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, 2676 + ... + 3107.

It is an arithmetic number, because the mean of its divisors is an integer number (108450).

2^1249128 is an apocalyptic number.

1249128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1249128 is an abundant number, since it is smaller than the sum of its proper divisors (2221272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1249128 is a wasteful number, since it uses less digits than its factorization.

1249128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5798 (or 5788 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 1249128 is about 1117.6439504601. The cubic root of 1249128 is about 107.6966797806.

1249128 divided by its sum of digits (27) gives a palindrome (46264).

The spelling of 1249128 in words is "one million, two hundred forty-nine thousand, one hundred twenty-eight".