154245241 has 4 divisors (see below), whose sum is σ = 154371172. Its totient is φ = 154119312.

The previous prime is 154245227. The next prime is 154245283. The reversal of 154245241 is 142542451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 142542451 = 8629 ⋅16519.

It can be written as a sum of positive squares in 2 ways, for example, as 74321641 + 79923600 = 8621^2 + 8940^2 .

It is a cyclic number.

It is not a de Polignac number, because 154245241 - 2¹⁵ = 154212473 is a prime.

It is a super-2 number, since 2×154245241² = 47583188742296162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154245541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61110 + ... + 63583.

It is an arithmetic number, because the mean of its divisors is an integer number (38592793).

Almost surely, 2^154245241 is an apocalyptic number.

It is an amenable number.

154245241 is a deficient number, since it is larger than the sum of its proper divisors (125931).

154245241 is a wasteful number, since it uses less digits than its factorization.

154245241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125930.

The product of its digits is 6400, while the sum is 28.

The square root of 154245241 is about 12419.5507567706. The cubic root of 154245241 is about 536.2952179763.

Adding to 154245241 its reverse (142542451), we get a palindrome (296787692).

The spelling of 154245241 in words is "one hundred fifty-four million, two hundred forty-five thousand, two hundred forty-one".