42125145 has 16 divisors (see below), whose sum is σ = 67754112. Its totient is φ = 22348800.

The previous prime is 42125137. The next prime is 42125159. The reversal of 42125145 is 54152124.

It is not a de Polignac number, because 42125145 - 2³ = 42125137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4381 + ... + 10170.

It is an arithmetic number, because the mean of its divisors is an integer number (4234632).

Almost surely, 2^42125145 is an apocalyptic number.

It is an amenable number.

42125145 is a deficient number, since it is larger than the sum of its proper divisors (25628967).

42125145 is a wasteful number, since it uses less digits than its factorization.

42125145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14752.

The product of its digits is 1600, while the sum is 24.

The square root of 42125145 is about 6490.3886632466. The cubic root of 42125145 is about 347.9475660861.

Adding to 42125145 its reverse (54152124), we get a palindrome (96277269).

The spelling of 42125145 in words is "forty-two million, one hundred twenty-five thousand, one hundred forty-five".