253045442 has 32 divisors (see below), whose sum is σ = 444537072. Its totient is φ = 106942464.

The previous prime is 253045433. The next prime is 253045447. The reversal of 253045442 is 244540352.

253045442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 161823841 + 91221601 = 12721^2 + 9551^2 .

It is not an unprimeable number, because it can be changed into a prime (253045447) 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 15 ways as a sum of consecutive naturals, for example, 8618 + ... + 24090.

Almost surely, 2^253045442 is an apocalyptic number.

253045442 is a deficient number, since it is larger than the sum of its proper divisors (191491630).

253045442 is a wasteful number, since it uses less digits than its factorization.

253045442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15542.

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 253045442 is about 15907.4021134816. The cubic root of 253045442 is about 632.5082186333.

Adding to 253045442 its reverse (244540352), we get a palindrome (497585794).

The spelling of 253045442 in words is "two hundred fifty-three million, forty-five thousand, four hundred forty-two".