1123121042 has 8 divisors (see below), whose sum is σ = 1723860336. Its totient is φ = 548500932.

The previous prime is 1123121011. The next prime is 1123121063. The reversal of 1123121042 is 2401213211.

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

It is a super-2 number, since 2×1123121042² = 2522801749966331528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1123121042.

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, 6529688 + ... + 6529859.

It is an arithmetic number, because the mean of its divisors is an integer number (215482542).

Almost surely, 2^1123121042 is an apocalyptic number.

1123121042 is a deficient number, since it is larger than the sum of its proper divisors (600739294).

1123121042 is a wasteful number, since it uses less digits than its factorization.

1123121042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13059592.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1123121042 is about 33512.9981052128. The cubic root of 1123121042 is about 1039.4625681078.

Adding to 1123121042 its reverse (2401213211), we get a palindrome (3524334253).

The spelling of 1123121042 in words is "one billion, one hundred twenty-three million, one hundred twenty-one thousand, forty-two".