153291242 has 8 divisors (see below), whose sum is σ = 247624356. Its totient is φ = 70749792.

The previous prime is 153291223. The next prime is 153291247. The reversal of 153291242 is 242192351.

It can be written as a sum of positive squares in 2 ways, for example, as 115971361 + 37319881 = 10769^2 + 6109^2 .

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 (153291247) 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, 2947883 + ... + 2947934.

Almost surely, 2^153291242 is an apocalyptic number.

153291242 is a deficient number, since it is larger than the sum of its proper divisors (94333114).

153291242 is a wasteful number, since it uses less digits than its factorization.

153291242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5895832.

The product of its digits is 4320, while the sum is 29.

The square root of 153291242 is about 12381.0840397762. The cubic root of 153291242 is about 535.1872777260.

The spelling of 153291242 in words is "one hundred fifty-three million, two hundred ninety-one thousand, two hundred forty-two".