254743287842 has 16 divisors (see below), whose sum is σ = 384415372152. Its totient is φ = 126605182080.

The previous prime is 254743287839. The next prime is 254743287857. The reversal of 254743287842 is 248782347452.

It is a happy number.

It is a Cunningham number, because it is equal to 504721²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 231727667161 + 23015620681 = 481381^2 + 151709^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1401092 + ... + 1572432.

Almost surely, 2^254743287842 is an apocalyptic number.

254743287842 is a deficient number, since it is larger than the sum of its proper divisors (129672084310).

254743287842 is a wasteful number, since it uses less digits than its factorization.

254743287842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175813.

The product of its digits is 24084480, while the sum is 56.

The spelling of 254743287842 in words is "two hundred fifty-four billion, seven hundred forty-three million, two hundred eighty-seven thousand, eight hundred forty-two".