1230542125 has 16 divisors (see below), whose sum is σ = 1616546880. Its totient is φ = 932619600.

The previous prime is 1230542111. The next prime is 1230542129. The reversal of 1230542125 is 5212450321.

It is not a de Polignac number, because 1230542125 - 2¹⁹ = 1230017837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1230542125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230542129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256687 + ... + 261436.

It is an arithmetic number, because the mean of its divisors is an integer number (101034180).

Almost surely, 2^1230542125 is an apocalyptic number.

It is an amenable number.

1230542125 is a deficient number, since it is larger than the sum of its proper divisors (386004755).

1230542125 is an equidigital number, since it uses as much as digits as its factorization.

1230542125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518157 (or 518147 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1230542125 is about 35079.0838677409. The cubic root of 1230542125 is about 1071.5986598755.

Adding to 1230542125 its reverse (5212450321), we get a palindrome (6442992446).

The spelling of 1230542125 in words is "one billion, two hundred thirty million, five hundred forty-two thousand, one hundred twenty-five".