42154262147 has 4 divisors (see below), whose sum is σ = 42457530360. Its totient is φ = 41850993936.

The previous prime is 42154262141. The next prime is 42154262159. The reversal of 42154262147 is 74126245124.

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

It is a cyclic number.

It is not a de Polignac number, because 42154262147 - 2⁴ = 42154262131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42154262147.

It is not an unprimeable number, because it can be changed into a prime (42154262141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151633898 + ... + 151634175.

It is an arithmetic number, because the mean of its divisors is an integer number (10614382590).

Almost surely, 2^42154262147 is an apocalyptic number.

42154262147 is a deficient number, since it is larger than the sum of its proper divisors (303268213).

42154262147 is a wasteful number, since it uses less digits than its factorization.

42154262147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303268212.

The product of its digits is 107520, while the sum is 38.

The spelling of 42154262147 in words is "forty-two billion, one hundred fifty-four million, two hundred sixty-two thousand, one hundred forty-seven".