1153542 has 32 divisors (see below), whose sum is σ = 2596608. Its totient is φ = 338976.

The previous prime is 1153531. The next prime is 1153553. The reversal of 1153542 is 2453511.

It is an interprime number because it is at equal distance from previous prime (1153531) and next prime (1153553).

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1473 + ... + 2115.

It is an arithmetic number, because the mean of its divisors is an integer number (81144).

2^1153542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1153542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1298304).

1153542 is an abundant number, since it is smaller than the sum of its proper divisors (1443066).

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

1153542 is a wasteful number, since it uses less digits than its factorization.

1153542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684.

The product of its digits is 600, while the sum is 21.

The square root of 1153542 is about 1074.0307258175. The cubic root of 1153542 is about 104.8764078687.

The spelling of 1153542 in words is "one million, one hundred fifty-three thousand, five hundred forty-two".