1248240 has 80 divisors (see below), whose sum is σ = 4428288. Its totient is φ = 284928.

The previous prime is 1248239. The next prime is 1248241. The reversal of 1248240 is 428421.

It is an interprime number because it is at equal distance from previous prime (1248239) and next prime (1248241).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248241) 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, 1309 + ... + 2051.

2^1248240 is an apocalyptic number.

1248240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1248240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2214144).

1248240 is an abundant number, since it is smaller than the sum of its proper divisors (3180048).

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

1248240 is a wasteful number, since it uses less digits than its factorization.

1248240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766 (or 760 counting only the distinct ones).

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

The square root of 1248240 is about 1117.2466155688. The cubic root of 1248240 is about 107.6711533540.

The spelling of 1248240 in words is "one million, two hundred forty-eight thousand, two hundred forty".