253078742 has 32 divisors (see below), whose sum is σ = 449200128. Its totient is φ = 104672736.

The previous prime is 253078741. The next prime is 253078751. The reversal of 253078742 is 247870352.

It is a junction number, because it is equal to n+sod(n) for n = 253078696 and 253078705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253078741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63863 + ... + 67709.

It is an arithmetic number, because the mean of its divisors is an integer number (14037504).

Almost surely, 2^253078742 is an apocalyptic number.

253078742 is a deficient number, since it is larger than the sum of its proper divisors (196121386).

253078742 is a wasteful number, since it uses less digits than its factorization.

253078742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 253078742 is about 15908.4487615858. The cubic root of 253078742 is about 632.5359627935.

The spelling of 253078742 in words is "two hundred fifty-three million, seventy-eight thousand, seven hundred forty-two".