253047742 has 8 divisors (see below), whose sum is σ = 380188656. Its totient is φ = 126318192.

The previous prime is 253047713. The next prime is 253047749. The reversal of 253047742 is 247740352.

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

It is a junction number, because it is equal to n+sod(n) for n = 253047698 and 253047707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253047749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101298 + ... + 103765.

It is an arithmetic number, because the mean of its divisors is an integer number (47523582).

Almost surely, 2^253047742 is an apocalyptic number.

253047742 is a deficient number, since it is larger than the sum of its proper divisors (127140914).

253047742 is a wasteful number, since it uses less digits than its factorization.

253047742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205682.

The product of its (nonzero) digits is 47040, while the sum is 34.

The square root of 253047742 is about 15907.4744067058. The cubic root of 253047742 is about 632.5101349748.

The spelling of 253047742 in words is "two hundred fifty-three million, forty-seven thousand, seven hundred forty-two".