125021435442 has 8 divisors (see below), whose sum is σ = 250042870896. Its totient is φ = 41673811812.

The previous prime is 125021435417. The next prime is 125021435443. The reversal of 125021435442 is 244534120521.

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

125021435442 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (125021435443) 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, 10418452948 + ... + 10418452959.

It is an arithmetic number, because the mean of its divisors is an integer number (31255358862).

Almost surely, 2^125021435442 is an apocalyptic number.

125021435442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125021435442 is a wasteful number, since it uses less digits than its factorization.

125021435442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20836905912.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 125021435442 its reverse (244534120521), we get a palindrome (369555555963).

The spelling of 125021435442 in words is "one hundred twenty-five billion, twenty-one million, four hundred thirty-five thousand, four hundred forty-two".