1242700125 has 16 divisors (see below), whose sum is σ = 2067853632. Its totient is φ = 662773200.

The previous prime is 1242700117. The next prime is 1242700127. The reversal of 1242700125 is 5210072421.

It is not a de Polignac number, because 1242700125 - 2³ = 1242700117 is a prime.

It is a super-4 number, since 4×1242700125⁴ (a number of 37 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1242700095 and 1242700104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242700127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1656559 + ... + 1657308.

It is an arithmetic number, because the mean of its divisors is an integer number (129240852).

Almost surely, 2^1242700125 is an apocalyptic number.

1242700125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1242700125 is a deficient number, since it is larger than the sum of its proper divisors (825153507).

1242700125 is an equidigital number, since it uses as much as digits as its factorization.

1242700125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313885 (or 3313875 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 1242700125 is about 35251.9520736086. The cubic root of 1242700125 is about 1075.1163025423.

Adding to 1242700125 its reverse (5210072421), we get a palindrome (6452772546).

The spelling of 1242700125 in words is "one billion, two hundred forty-two million, seven hundred thousand, one hundred twenty-five".