42015216145 has 16 divisors (see below), whose sum is σ = 57713984640. Its totient is φ = 28763875584.

The previous prime is 42015216137. The next prime is 42015216149. The reversal of 42015216145 is 54161251024.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42015216145 - 2³ = 42015216137 is a prime.

It is a super-3 number, since 3×42015216145³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (42015216149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 947992 + ... + 991321.

It is an arithmetic number, because the mean of its divisors is an integer number (3607124040).

Almost surely, 2^42015216145 is an apocalyptic number.

It is an amenable number.

42015216145 is a deficient number, since it is larger than the sum of its proper divisors (15698768495).

42015216145 is a wasteful number, since it uses less digits than its factorization.

42015216145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939944.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 42015216145 its reverse (54161251024), we get a palindrome (96176467169).

The spelling of 42015216145 in words is "forty-two billion, fifteen million, two hundred sixteen thousand, one hundred forty-five".