1248945 has 16 divisors (see below), whose sum is σ = 2037312. Its totient is φ = 653120.

The previous prime is 1248941. The next prime is 1248953. The reversal of 1248945 is 5498421.

It is not a de Polignac number, because 1248945 - 2² = 1248941 is a prime.

It is a super-2 number, since 2×1248945² = 3119727226050, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1248941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10 + ... + 1580.

It is an arithmetic number, because the mean of its divisors is an integer number (127332).

2^1248945 is an apocalyptic number.

1248945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1248945 is a deficient number, since it is larger than the sum of its proper divisors (788367).

1248945 is a wasteful number, since it uses less digits than its factorization.

1248945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632.

The product of its digits is 11520, while the sum is 33.

The square root of 1248945 is about 1117.5620788126. The cubic root of 1248945 is about 107.6914202569.

The spelling of 1248945 in words is "one million, two hundred forty-eight thousand, nine hundred forty-five".