153145242 has 20 divisors (see below), whose sum is σ = 343159146. Its totient is φ = 51048360.

The previous prime is 153145229. The next prime is 153145253. The reversal of 153145242 is 242541351.

It can be written as a sum of positive squares in only one way, i.e., 84437721 + 68707521 = 9189^2 + 8289^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 472509 + ... + 472832.

Almost surely, 2^153145242 is an apocalyptic number.

153145242 is an abundant number, since it is smaller than the sum of its proper divisors (190013904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

153145242 is an equidigital number, since it uses as much as digits as its factorization.

153145242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945355 (or 945346 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 153145242 is about 12375.1865440485. The cubic root of 153145242 is about 535.0173133245.

Adding to 153145242 its reverse (242541351), we get a palindrome (395686593).

The spelling of 153145242 in words is "one hundred fifty-three million, one hundred forty-five thousand, two hundred forty-two".