42125434 has 8 divisors (see below), whose sum is σ = 68048820. Its totient is φ = 19442496.

The previous prime is 42125431. The next prime is 42125437. The reversal of 42125434 is 43452124.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42125431) and next prime (42125437).

It can be written as a sum of positive squares in 2 ways, for example, as 41925625 + 199809 = 6475^2 + 447^2 .

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 = 42125399 and 42125408.

It is not an unprimeable number, because it can be changed into a prime (42125431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810079 + ... + 810130.

Almost surely, 2^42125434 is an apocalyptic number.

42125434 is a deficient number, since it is larger than the sum of its proper divisors (25923386).

42125434 is a wasteful number, since it uses less digits than its factorization.

42125434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620224.

The product of its digits is 3840, while the sum is 25.

The square root of 42125434 is about 6490.4109268982. The cubic root of 42125434 is about 347.9483617836.

Adding to 42125434 its reverse (43452124), we get a palindrome (85577558).

The spelling of 42125434 in words is "forty-two million, one hundred twenty-five thousand, four hundred thirty-four".