253420144 has 20 divisors (see below), whose sum is σ = 492001000. Its totient is φ = 126452160.

The previous prime is 253420121. The next prime is 253420147. The reversal of 253420144 is 441024352.

It is a happy number.

253420144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253420147) 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, 7887 + ... + 23854.

It is an arithmetic number, because the mean of its divisors is an integer number (24600050).

Almost surely, 2^253420144 is an apocalyptic number.

It is an amenable number.

253420144 is a deficient number, since it is larger than the sum of its proper divisors (238580856).

253420144 is a wasteful number, since it uses less digits than its factorization.

253420144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32248 (or 32242 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 253420144 is about 15919.1753555264. The cubic root of 253420144 is about 632.8202643104.

Adding to 253420144 its reverse (441024352), we get a palindrome (694444496).

The spelling of 253420144 in words is "two hundred fifty-three million, four hundred twenty thousand, one hundred forty-four".