181420425242 has 48 divisors (see below), whose sum is σ = 326876705280. Its totient is φ = 75219328800.

The previous prime is 181420425233. The next prime is 181420425253. The reversal of 181420425242 is 242524024181.

It is a super-2 number, since 2×181420425242² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11873984 + ... + 11889252.

It is an arithmetic number, because the mean of its divisors is an integer number (6809931360).

Almost surely, 2^181420425242 is an apocalyptic number.

181420425242 is a deficient number, since it is larger than the sum of its proper divisors (145456280038).

181420425242 is a wasteful number, since it uses less digits than its factorization.

181420425242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19227 (or 19220 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 35.

The spelling of 181420425242 in words is "one hundred eighty-one billion, four hundred twenty million, four hundred twenty-five thousand, two hundred forty-two".