1131558442 has 16 divisors (see below), whose sum is σ = 1948145472. Its totient is φ = 482870880.

The previous prime is 1131558431. The next prime is 1131558517. The reversal of 1131558442 is 2448551311.

It is a super-2 number, since 2×1131558442² = 2560849015322934728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1131558398 and 1131558407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170184 + ... + 176707.

It is an arithmetic number, because the mean of its divisors is an integer number (121759092).

Almost surely, 2^1131558442 is an apocalyptic number.

1131558442 is a deficient number, since it is larger than the sum of its proper divisors (816587030).

1131558442 is a wasteful number, since it uses less digits than its factorization.

1131558442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347133.

The product of its digits is 19200, while the sum is 34.

The square root of 1131558442 is about 33638.6450678383. The cubic root of 1131558442 is about 1042.0590500022.

The spelling of 1131558442 in words is "one billion, one hundred thirty-one million, five hundred fifty-eight thousand, four hundred forty-two".