42615129 has 8 divisors (see below), whose sum is σ = 56926240. Its totient is φ = 28357056.

The previous prime is 42615121. The next prime is 42615143. The reversal of 42615129 is 92151624.

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

It is not a de Polignac number, because 42615129 - 2³ = 42615121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42615096 and 42615105.

It is not an unprimeable number, because it can be changed into a prime (42615121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11344 + ... + 14625.

It is an arithmetic number, because the mean of its divisors is an integer number (7115780).

Almost surely, 2^42615129 is an apocalyptic number.

It is an amenable number.

42615129 is a deficient number, since it is larger than the sum of its proper divisors (14311111).

42615129 is a wasteful number, since it uses less digits than its factorization.

42615129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26519.

The product of its digits is 4320, while the sum is 30.

The square root of 42615129 is about 6528.0264245789. The cubic root of 42615129 is about 349.2914345237.

The spelling of 42615129 in words is "forty-two million, six hundred fifteen thousand, one hundred twenty-nine".