125121143450 has 24 divisors (see below), whose sum is σ = 232734666528. Its totient is φ = 50046448880.

The previous prime is 125121143417. The next prime is 125121143453. The reversal of 125121143450 is 54341121521.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (125121143453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2265869 + ... + 2320431.

It is an arithmetic number, because the mean of its divisors is an integer number (9697277772).

Almost surely, 2^125121143450 is an apocalyptic number.

125121143450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125121143450 is a deficient number, since it is larger than the sum of its proper divisors (107613523078).

125121143450 is a wasteful number, since it uses less digits than its factorization.

125121143450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100438 (or 100433 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 125121143450 its reverse (54341121521), we get a palindrome (179462264971).

The spelling of 125121143450 in words is "one hundred twenty-five billion, one hundred twenty-one million, one hundred forty-three thousand, four hundred fifty".