42154221263 has 16 divisors (see below), whose sum is σ = 52574735616. Its totient is φ = 32835680640.

The previous prime is 42154221257. The next prime is 42154221271. The reversal of 42154221263 is 36212245124.

It is not a de Polignac number, because 42154221263 - 2¹⁰ = 42154220239 is a prime.

It is a super-2 number, since 2×42154221263² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42154221203) 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, 121520 + ... + 314762.

It is an arithmetic number, because the mean of its divisors is an integer number (3285920976).

Almost surely, 2^42154221263 is an apocalyptic number.

42154221263 is a deficient number, since it is larger than the sum of its proper divisors (10420514353).

42154221263 is a wasteful number, since it uses less digits than its factorization.

42154221263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196094.

The product of its digits is 23040, while the sum is 32.

Adding to 42154221263 its reverse (36212245124), we get a palindrome (78366466387).

The spelling of 42154221263 in words is "forty-two billion, one hundred fifty-four million, two hundred twenty-one thousand, two hundred sixty-three".