1140258 has 32 divisors (see below), whose sum is σ = 2761344. Its totient is φ = 306432.

The previous prime is 1140257. The next prime is 1140281. The reversal of 1140258 is 8520411.

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

It is a Curzon number.

It is a zygodrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1140253) 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, 85 + ... + 1512.

It is an arithmetic number, because the mean of its divisors is an integer number (86292).

2^1140258 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1140258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1380672).

1140258 is an abundant number, since it is smaller than the sum of its proper divisors (1621086).

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

1140258 is a wasteful number, since it uses less digits than its factorization.

1140258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1140258 is about 1067.8286379378. The cubic root of 1140258 is about 104.4722727350.

Adding to 1140258 its reverse (8520411), we get a palindrome (9660669).

The spelling of 1140258 in words is "one million, one hundred forty thousand, two hundred fifty-eight".