1078123201 has 4 divisors (see below), whose sum is σ = 1078319572. Its totient is φ = 1077926832.

The previous prime is 1078123199. The next prime is 1078123237. The reversal of 1078123201 is 1023218701.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1023218701 = 71 ⋅14411531.

It can be written as a sum of positive squares in 2 ways, for example, as 768398400 + 309724801 = 27720^2 + 17599^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078123201 - 2¹ = 1078123199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1078123801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89706 + ... + 101011.

It is an arithmetic number, because the mean of its divisors is an integer number (269579893).

Almost surely, 2^1078123201 is an apocalyptic number.

It is an amenable number.

1078123201 is a deficient number, since it is larger than the sum of its proper divisors (196371).

1078123201 is an equidigital number, since it uses as much as digits as its factorization.

1078123201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196370.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1078123201 is about 32834.7864466940. The cubic root of 1078123201 is about 1025.3909120896.

The spelling of 1078123201 in words is "one billion, seventy-eight million, one hundred twenty-three thousand, two hundred one".