255140542 has 4 divisors (see below), whose sum is σ = 382710816. Its totient is φ = 127570270.

The previous prime is 255140527. The next prime is 255140549. The reversal of 255140542 is 245041552.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 255140542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255140549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63785134 + ... + 63785137.

It is an arithmetic number, because the mean of its divisors is an integer number (95677704).

Almost surely, 2^255140542 is an apocalyptic number.

255140542 is a deficient number, since it is larger than the sum of its proper divisors (127570274).

255140542 is a wasteful number, since it uses less digits than its factorization.

255140542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127570273.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 255140542 is about 15973.1193572201. The cubic root of 255140542 is about 634.2490488282.

The spelling of 255140542 in words is "two hundred fifty-five million, one hundred forty thousand, five hundred forty-two".