154251242 has 8 divisors (see below), whose sum is σ = 231468516. Its totient is φ = 77095072.

The previous prime is 154251233. The next prime is 154251247. The reversal of 154251242 is 242152451.

It can be written as a sum of positive squares in 2 ways, for example, as 152004241 + 2247001 = 12329^2 + 1499^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (154251247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8333 + ... + 19440.

Almost surely, 2^154251242 is an apocalyptic number.

154251242 is a deficient number, since it is larger than the sum of its proper divisors (77217274).

154251242 is a wasteful number, since it uses less digits than its factorization.

154251242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30552.

The product of its digits is 3200, while the sum is 26.

The square root of 154251242 is about 12419.7923493108. The cubic root of 154251242 is about 536.3021728443.

The spelling of 154251242 in words is "one hundred fifty-four million, two hundred fifty-one thousand, two hundred forty-two".