154842071 has 4 divisors (see below), whose sum is σ = 155264352. Its totient is φ = 154419792.

The previous prime is 154842059. The next prime is 154842073. The reversal of 154842071 is 170248451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 170248451 = 139 ⋅1224809.

It is a cyclic number.

It is not a de Polignac number, because 154842071 - 2⁶ = 154842007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154842073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210590 + ... + 211323.

It is an arithmetic number, because the mean of its divisors is an integer number (38816088).

Almost surely, 2^154842071 is an apocalyptic number.

154842071 is a deficient number, since it is larger than the sum of its proper divisors (422281).

154842071 is an equidigital number, since it uses as much as digits as its factorization.

154842071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422280.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 154842071 is about 12443.5554002865. Note that the first 3 decimals coincide. The cubic root of 154842071 is about 536.9860337343.

The spelling of 154842071 in words is "one hundred fifty-four million, eight hundred forty-two thousand, seventy-one".