1075042123 has 4 divisors (see below), whose sum is σ = 1075480360. Its totient is φ = 1074603888.

The previous prime is 1075042121. The next prime is 1075042147. The reversal of 1075042123 is 3212405701.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1075042123 - 2¹ = 1075042121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1075042121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215418 + ... + 220351.

It is an arithmetic number, because the mean of its divisors is an integer number (268870090).

Almost surely, 2^1075042123 is an apocalyptic number.

1075042123 is a deficient number, since it is larger than the sum of its proper divisors (438237).

1075042123 is an equidigital number, since it uses as much as digits as its factorization.

1075042123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438236.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 1075042123 is about 32787.8349849453. The cubic root of 1075042123 is about 1024.4131871753.

Adding to 1075042123 its reverse (3212405701), we get a palindrome (4287447824).

The spelling of 1075042123 in words is "one billion, seventy-five million, forty-two thousand, one hundred twenty-three".