1153240 has 32 divisors (see below), whose sum is σ = 2831760. Its totient is φ = 419200.

The previous prime is 1153237. The next prime is 1153241. The reversal of 1153240 is 423511.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153241) 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, 871 + ... + 1750.

2^1153240 is an apocalyptic number.

1153240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1153240 is an abundant number, since it is smaller than the sum of its proper divisors (1678520).

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

1153240 is a wasteful number, since it uses less digits than its factorization.

1153240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2643 (or 2639 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1153240 is about 1073.8901247334. The cubic root of 1153240 is about 104.8672547734.

Adding to 1153240 its reverse (423511), we get a palindrome (1576751).

It can be divided in two parts, 11532 and 40, that multiplied together give a triangular number (461280 = T₉₆₀).

The spelling of 1153240 in words is "one million, one hundred fifty-three thousand, two hundred forty".