125000042 has 8 divisors (see below), whose sum is σ = 187551936. Its totient is φ = 62482732.

The previous prime is 125000003. The next prime is 125000077. The reversal of 125000042 is 240000521.

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 = 124999990 and 125000026.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4223 + ... + 16365.

It is an arithmetic number, because the mean of its divisors is an integer number (23443992).

Almost surely, 2^125000042 is an apocalyptic number.

125000042 is a deficient number, since it is larger than the sum of its proper divisors (62551894).

125000042 is a wasteful number, since it uses less digits than its factorization.

125000042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17292.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 125000042 is about 11180.3417657959. The cubic root of 125000042 is about 500.0000560000. Note that the first 4 decimals are identical.

Adding to 125000042 its reverse (240000521), we get a palindrome (365000563).

The spelling of 125000042 in words is "one hundred twenty-five million, forty-two", and thus it is an aban number.