1249220 has 24 divisors (see below), whose sum is σ = 2998464. Its totient is φ = 428256.

The previous prime is 1249217. The next prime is 1249243. The reversal of 1249220 is 229421.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1249192 and 1249201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4322 + ... + 4601.

It is an arithmetic number, because the mean of its divisors is an integer number (124936).

2^1249220 is an apocalyptic number.

1249220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1249220 is an abundant number, since it is smaller than the sum of its proper divisors (1749244).

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

1249220 is a wasteful number, since it uses less digits than its factorization.

1249220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8939 (or 8937 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1249220 is about 1117.6851077115. The cubic root of 1249220 is about 107.6993237187.

The spelling of 1249220 in words is "one million, two hundred forty-nine thousand, two hundred twenty".