247108142 has 4 divisors (see below), whose sum is σ = 370662216. Its totient is φ = 123554070.

The previous prime is 247108117. The next prime is 247108151. The reversal of 247108142 is 241801742.

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

It is a super-2 number, since 2×247108142² = 122124867685384328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61777034 + ... + 61777037.

It is an arithmetic number, because the mean of its divisors is an integer number (92665554).

Almost surely, 2^247108142 is an apocalyptic number.

247108142 is a deficient number, since it is larger than the sum of its proper divisors (123554074).

247108142 is a wasteful number, since it uses less digits than its factorization.

247108142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123554073.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 247108142 is about 15719.6737243494. The cubic root of 247108142 is about 627.5220899828.

Adding to 247108142 its reverse (241801742), we get a palindrome (488909884).

The spelling of 247108142 in words is "two hundred forty-seven million, one hundred eight thousand, one hundred forty-two".