125405423242 has 8 divisors (see below), whose sum is σ = 205208874432. Its totient is φ = 57002465100.

The previous prime is 125405423203. The next prime is 125405423249. The reversal of 125405423242 is 242324504521.

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

It is a junction number, because it is equal to n+sod(n) for n = 125405423198 and 125405423207.

It is not an unprimeable number, because it can be changed into a prime (125405423249) 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, 2850123234 + ... + 2850123277.

It is an arithmetic number, because the mean of its divisors is an integer number (25651109304).

Almost surely, 2^125405423242 is an apocalyptic number.

125405423242 is a deficient number, since it is larger than the sum of its proper divisors (79803451190).

125405423242 is a wasteful number, since it uses less digits than its factorization.

125405423242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5700246524.

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 125405423242 its reverse (242324504521), we get a palindrome (367729927763).

The spelling of 125405423242 in words is "one hundred twenty-five billion, four hundred five million, four hundred twenty-three thousand, two hundred forty-two".