1201203123 has 8 divisors (see below), whose sum is σ = 1685899200. Its totient is φ = 758654568.

The previous prime is 1201203109. The next prime is 1201203127. The reversal of 1201203123 is 3213021021.

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

It is not a de Polignac number, because 1201203123 - 2¹³ = 1201194931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201203127) 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, 10536813 + ... + 10536926.

It is an arithmetic number, because the mean of its divisors is an integer number (210737400).

Almost surely, 2^1201203123 is an apocalyptic number.

1201203123 is a deficient number, since it is larger than the sum of its proper divisors (484696077).

1201203123 is a wasteful number, since it uses less digits than its factorization.

1201203123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21073761.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1201203123 is about 34658.3773855615. The cubic root of 1201203123 is about 1063.0135919395.

Adding to 1201203123 its reverse (3213021021), we get a palindrome (4414224144).

The spelling of 1201203123 in words is "one billion, two hundred one million, two hundred three thousand, one hundred twenty-three".