253444042 has 8 divisors (see below), whose sum is σ = 389438532. Its totient is φ = 123631200.

The previous prime is 253444033. The next prime is 253444057. The reversal of 253444042 is 240444352.

It can be written as a sum of positive squares in 2 ways, for example, as 243640881 + 9803161 = 15609^2 + 3131^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 253444042.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1545309 + ... + 1545472.

Almost surely, 2^253444042 is an apocalyptic number.

253444042 is a deficient number, since it is larger than the sum of its proper divisors (135994490).

253444042 is a wasteful number, since it uses less digits than its factorization.

253444042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3090824.

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 253444042 is about 15919.9259420388. The cubic root of 253444042 is about 632.8401557353.

Adding to 253444042 its reverse (240444352), we get a palindrome (493888394).

The spelling of 253444042 in words is "two hundred fifty-three million, four hundred forty-four thousand, forty-two".