208047142 has 4 divisors (see below), whose sum is σ = 312070716. Its totient is φ = 104023570.

The previous prime is 208047113. The next prime is 208047143. The reversal of 208047142 is 241740802.

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

It is a super-2 number, since 2×208047142² = 86567226588736328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 208047142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208047143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52011784 + ... + 52011787.

It is an arithmetic number, because the mean of its divisors is an integer number (78017679).

Almost surely, 2^208047142 is an apocalyptic number.

208047142 is a deficient number, since it is larger than the sum of its proper divisors (104023574).

208047142 is a wasteful number, since it uses less digits than its factorization.

208047142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104023573.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 208047142 is about 14423.8393640528. The cubic root of 208047142 is about 592.5439724764.

Adding to 208047142 its reverse (241740802), we get a palindrome (449787944).

The spelling of 208047142 in words is "two hundred eight million, forty-seven thousand, one hundred forty-two".