154317242 has 4 divisors (see below), whose sum is σ = 231475866. Its totient is φ = 77158620.

The previous prime is 154317223. The next prime is 154317271. The reversal of 154317242 is 242713451.

154317242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242713451 = 37 ⋅6559823.

It can be written as a sum of positive squares in only one way, i.e., 153487321 + 829921 = 12389^2 + 911^2 .

It is a super-2 number, since 2×154317242² = 47627622356973128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38579309 + ... + 38579312.

Almost surely, 2^154317242 is an apocalyptic number.

154317242 is a deficient number, since it is larger than the sum of its proper divisors (77158624).

154317242 is an equidigital number, since it uses as much as digits as its factorization.

154317242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77158623.

The product of its digits is 6720, while the sum is 29.

The square root of 154317242 is about 12422.4491144057. The cubic root of 154317242 is about 536.3786517451.

The spelling of 154317242 in words is "one hundred fifty-four million, three hundred seventeen thousand, two hundred forty-two".