42154223446 has 4 divisors (see below), whose sum is σ = 63231335172. Its totient is φ = 21077111722.

The previous prime is 42154223393. The next prime is 42154223453. The reversal of 42154223446 is 64432245124.

42154223446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×42154223446² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10538555860 + ... + 10538555863.

It is an arithmetic number, because the mean of its divisors is an integer number (15807833793).

Almost surely, 2^42154223446 is an apocalyptic number.

42154223446 is a deficient number, since it is larger than the sum of its proper divisors (21077111726).

42154223446 is a wasteful number, since it uses less digits than its factorization.

42154223446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21077111725.

The product of its digits is 184320, while the sum is 37.

The spelling of 42154223446 in words is "forty-two billion, one hundred fifty-four million, two hundred twenty-three thousand, four hundred forty-six".