1030120123 has 4 divisors (see below), whose sum is σ = 1030206880. Its totient is φ = 1030033368.

The previous prime is 1030120099. The next prime is 1030120127. The reversal of 1030120123 is 3210210301.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3210210301 = 31 ⋅103555171.

It is a cyclic number.

It is not a de Polignac number, because 1030120123 - 2⁹ = 1030119611 is a prime.

It is a super-4 number, since 4×1030120123⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1030120127) 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, 22083 + ... + 50476.

It is an arithmetic number, because the mean of its divisors is an integer number (257551720).

Almost surely, 2^1030120123 is an apocalyptic number.

1030120123 is a deficient number, since it is larger than the sum of its proper divisors (86757).

1030120123 is an equidigital number, since it uses as much as digits as its factorization.

1030120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86756.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1030120123 is about 32095.4844643292. The cubic root of 1030120123 is about 1009.9408922048.

Adding to 1030120123 its reverse (3210210301), we get a palindrome (4240330424).

The spelling of 1030120123 in words is "one billion, thirty million, one hundred twenty thousand, one hundred twenty-three".