1225120143 has 8 divisors (see below), whose sum is σ = 1759146928. Its totient is φ = 753920064.

The previous prime is 1225120129. The next prime is 1225120151. The reversal of 1225120143 is 3410215221.

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

It is not a de Polignac number, because 1225120143 - 2⁸ = 1225119887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225120163) 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, 15706630 + ... + 15706707.

It is an arithmetic number, because the mean of its divisors is an integer number (219893366).

Almost surely, 2^1225120143 is an apocalyptic number.

1225120143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1225120143 is a deficient number, since it is larger than the sum of its proper divisors (534026785).

1225120143 is a wasteful number, since it uses less digits than its factorization.

1225120143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31413353.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1225120143 is about 35001.7162864909. The cubic root of 1225120143 is about 1070.0224594232.

Adding to 1225120143 its reverse (3410215221), we get a palindrome (4635335364).

The spelling of 1225120143 in words is "one billion, two hundred twenty-five million, one hundred twenty thousand, one hundred forty-three".