1248420 has 24 divisors (see below), whose sum is σ = 3495744. Its totient is φ = 332896.

The previous prime is 1248413. The next prime is 1248427. The reversal of 1248420 is 248421.

It is an interprime number because it is at equal distance from previous prime (1248413) and next prime (1248427).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1248427) 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, 10344 + ... + 10463.

It is an arithmetic number, because the mean of its divisors is an integer number (145656).

2^1248420 is an apocalyptic number.

1248420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1248420 is an abundant number, since it is smaller than the sum of its proper divisors (2247324).

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

1248420 is a wasteful number, since it uses less digits than its factorization.

1248420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20819 (or 20817 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1248420 is about 1117.3271678430. The cubic root of 1248420 is about 107.6763286077.

Subtracting from 1248420 its reverse (248421), we obtain a palindrome (999999).

The spelling of 1248420 in words is "one million, two hundred forty-eight thousand, four hundred twenty".