253166742 has 16 divisors (see below), whose sum is σ = 562592880. Its totient is φ = 84388896.

The previous prime is 253166741. The next prime is 253166747. The reversal of 253166742 is 247661352.

It is a junction number, because it is equal to n+sod(n) for n = 253166697 and 253166706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253166741) 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 7 ways as a sum of consecutive naturals, for example, 2344083 + ... + 2344190.

It is an arithmetic number, because the mean of its divisors is an integer number (35162055).

Almost surely, 2^253166742 is an apocalyptic number.

253166742 is an abundant number, since it is smaller than the sum of its proper divisors (309426138).

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

253166742 is a wasteful number, since it uses less digits than its factorization.

253166742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688284 (or 4688278 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 253166742 is about 15911.2143471201. The cubic root of 253166742 is about 632.6092689825.

The spelling of 253166742 in words is "two hundred fifty-three million, one hundred sixty-six thousand, seven hundred forty-two".