1151240 has 32 divisors (see below), whose sum is σ = 2744280. Its totient is φ = 433152.

The previous prime is 1151237. The next prime is 1151243. The reversal of 1151240 is 421511.

It is an interprime number because it is at equal distance from previous prime (1151237) and next prime (1151243).

It can be written as a sum of positive squares in 4 ways, for example, as 996004 + 155236 = 998^2 + 394^2 .

It is not an unprimeable number, because it can be changed into a prime (1151243) 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, 167 + ... + 1526.

2^1151240 is an apocalyptic number.

1151240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151240 is an abundant number, since it is smaller than the sum of its proper divisors (1593040).

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

1151240 is a wasteful number, since it uses less digits than its factorization.

1151240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721 (or 1717 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1151240 is about 1072.9585266915. The cubic root of 1151240 is about 104.8065978792.

Adding to 1151240 its reverse (421511), we get a palindrome (1572751).

The spelling of 1151240 in words is "one million, one hundred fifty-one thousand, two hundred forty".