1157442 has 64 divisors (see below), whose sum is σ = 2903040. Its totient is φ = 302400.

The previous prime is 1157437. The next prime is 1157449. The reversal of 1157442 is 2447511.

It is not an unprimeable number, because it can be changed into a prime (1157449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16267 + ... + 16337.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

2^1157442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1157442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1451520).

1157442 is an abundant number, since it is smaller than the sum of its proper divisors (1745598).

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

1157442 is a wasteful number, since it uses less digits than its factorization.

1157442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119.

The product of its digits is 1120, while the sum is 24.

The square root of 1157442 is about 1075.8447843439. The cubic root of 1157442 is about 104.9944668286.

It can be divided in two parts, 115 and 7442, that added together give a palindrome (7557).

The spelling of 1157442 in words is "one million, one hundred fifty-seven thousand, four hundred forty-two".