255387742 has 8 divisors (see below), whose sum is σ = 385198632. Its totient is φ = 126988200.

The previous prime is 255387733. The next prime is 255387751. The reversal of 255387742 is 247783552.

It is an interprime number because it is at equal distance from previous prime (255387733) and next prime (255387751).

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

It is a congruent number.

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, 352384 + ... + 353107.

It is an arithmetic number, because the mean of its divisors is an integer number (48149829).

Almost surely, 2^255387742 is an apocalyptic number.

255387742 is a deficient number, since it is larger than the sum of its proper divisors (129810890).

255387742 is a wasteful number, since it uses less digits than its factorization.

255387742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705674.

The product of its digits is 470400, while the sum is 43.

The square root of 255387742 is about 15980.8554839846. The cubic root of 255387742 is about 634.4538193118.

The spelling of 255387742 in words is "two hundred fifty-five million, three hundred eighty-seven thousand, seven hundred forty-two".