1129355642 has 8 divisors (see below), whose sum is σ = 1752448500. Its totient is φ = 545206144.

The previous prime is 1129355627. The next prime is 1129355653. The reversal of 1129355642 is 2465539211.

It can be written as a sum of positive squares in 2 ways, for example, as 1105629001 + 23726641 = 33251^2 + 4871^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1129355642² = 2550888332234464328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1129355596 and 1129355605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9735767 + ... + 9735882.

Almost surely, 2^1129355642 is an apocalyptic number.

1129355642 is a deficient number, since it is larger than the sum of its proper divisors (623092858).

1129355642 is a wasteful number, since it uses less digits than its factorization.

1129355642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19471680.

The product of its digits is 64800, while the sum is 38.

The square root of 1129355642 is about 33605.8870140337. The cubic root of 1129355642 is about 1041.3824201096.

The spelling of 1129355642 in words is "one billion, one hundred twenty-nine million, three hundred fifty-five thousand, six hundred forty-two".