42015601231 has 8 divisors (see below), whose sum is σ = 42287257584. Its totient is φ = 41744276160.

The previous prime is 42015601217. The next prime is 42015601237. The reversal of 42015601231 is 13210651024.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42015601231 - 2²¹ = 42013504079 is a prime.

It is a super-2 number, since 2×42015601231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42015601196 and 42015601205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42015601237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174220 + ... + 338206.

It is an arithmetic number, because the mean of its divisors is an integer number (5285907198).

Almost surely, 2^42015601231 is an apocalyptic number.

42015601231 is a deficient number, since it is larger than the sum of its proper divisors (271656353).

42015601231 is a wasteful number, since it uses less digits than its factorization.

42015601231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165641.

The product of its (nonzero) digits is 1440, while the sum is 25.

The spelling of 42015601231 in words is "forty-two billion, fifteen million, six hundred one thousand, two hundred thirty-one".