1204534123 has 4 divisors (see below), whose sum is σ = 1297190608. Its totient is φ = 1111877640.

The previous prime is 1204534117. The next prime is 1204534129. The reversal of 1204534123 is 3214354021.

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

It is an interprime number because it is at equal distance from previous prime (1204534117) and next prime (1204534129).

It is a cyclic number.

It is not a de Polignac number, because 1204534123 - 2¹⁷ = 1204403051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1204534129) 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, 46328223 + ... + 46328248.

It is an arithmetic number, because the mean of its divisors is an integer number (324297652).

Almost surely, 2^1204534123 is an apocalyptic number.

1204534123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1204534123 is a deficient number, since it is larger than the sum of its proper divisors (92656485).

1204534123 is an equidigital number, since it uses as much as digits as its factorization.

1204534123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92656484.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1204534123 is about 34706.3988768642. The cubic root of 1204534123 is about 1063.9952827702.

Adding to 1204534123 its reverse (3214354021), we get a palindrome (4418888144).

The spelling of 1204534123 in words is "one billion, two hundred four million, five hundred thirty-four thousand, one hundred twenty-three".