1123557342 has 16 divisors (see below), whose sum is σ = 2247523200. Its totient is φ = 374451032.

The previous prime is 1123557313. The next prime is 1123557349. The reversal of 1123557342 is 2437553211.

It is a super-2 number, since 2×1123557342² = 2524762201524209928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123557349) 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, 27823 + ... + 54965.

It is an arithmetic number, because the mean of its divisors is an integer number (140470200).

Almost surely, 2^1123557342 is an apocalyptic number.

1123557342 is an abundant number, since it is smaller than the sum of its proper divisors (1123965858).

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

1123557342 is a wasteful number, since it uses less digits than its factorization.

1123557342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34047.

The product of its digits is 25200, while the sum is 33.

The square root of 1123557342 is about 33519.5068877810. The cubic root of 1123557342 is about 1039.5971510506.

The spelling of 1123557342 in words is "one billion, one hundred twenty-three million, five hundred fifty-seven thousand, three hundred forty-two".