125133534242 has 4 divisors (see below), whose sum is σ = 187700301366. Its totient is φ = 62566767120.

The previous prime is 125133534223. The next prime is 125133534257. The reversal of 125133534242 is 242435331521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 96838593721 + 28294940521 = 311189^2 + 168211^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31283383559 + ... + 31283383562.

Almost surely, 2^125133534242 is an apocalyptic number.

125133534242 is a deficient number, since it is larger than the sum of its proper divisors (62566767124).

125133534242 is an equidigital number, since it uses as much as digits as its factorization.

125133534242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62566767123.

The product of its digits is 86400, while the sum is 35.

Adding to 125133534242 its reverse (242435331521), we get a palindrome (367568865763).

The spelling of 125133534242 in words is "one hundred twenty-five billion, one hundred thirty-three million, five hundred thirty-four thousand, two hundred forty-two".