154142281 has 16 divisors (see below), whose sum is σ = 168390144. Its totient is φ = 140534784.

The previous prime is 154142273. The next prime is 154142291. The reversal of 154142281 is 182241451.

It is not a de Polignac number, because 154142281 - 2³ = 154142273 is a prime.

It is a super-2 number, since 2×154142281² = 47519685583765922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154142291) 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, 81361 + ... + 83233.

It is an arithmetic number, because the mean of its divisors is an integer number (10524384).

Almost surely, 2^154142281 is an apocalyptic number.

It is an amenable number.

154142281 is a deficient number, since it is larger than the sum of its proper divisors (14247863).

154142281 is a wasteful number, since it uses less digits than its factorization.

154142281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040.

The product of its digits is 2560, while the sum is 28.

The square root of 154142281 is about 12415.4049873534. The cubic root of 154142281 is about 536.1758642213.

The spelling of 154142281 in words is "one hundred fifty-four million, one hundred forty-two thousand, two hundred eighty-one".