1135420123 has 8 divisors (see below), whose sum is σ = 1220154192. Its totient is φ = 1052679936.

The previous prime is 1135420087. The next prime is 1135420133. The reversal of 1135420123 is 3210245311.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1135420123 - 2⁹ = 1135419611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1135420094 and 1135420103.

It is not an unprimeable number, because it can be changed into a prime (1135420133) 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, 497290 + ... + 499567.

It is an arithmetic number, because the mean of its divisors is an integer number (152519274).

Almost surely, 2^1135420123 is an apocalyptic number.

1135420123 is a deficient number, since it is larger than the sum of its proper divisors (84734069).

1135420123 is an equidigital number, since it uses as much as digits as its factorization.

1135420123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996941.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1135420123 is about 33695.9956523027. The cubic root of 1135420123 is about 1043.2431192319.

Adding to 1135420123 its reverse (3210245311), we get a palindrome (4345665434).

The spelling of 1135420123 in words is "one billion, one hundred thirty-five million, four hundred twenty thousand, one hundred twenty-three".