68020143 has 4 divisors (see below), whose sum is σ = 90693528. Its totient is φ = 45346760.

The previous prime is 68020103. The next prime is 68020157. The reversal of 68020143 is 34102086.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 68020143 - 2⁶ = 68020079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68020103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11336688 + ... + 11336693.

It is an arithmetic number, because the mean of its divisors is an integer number (22673382).

Almost surely, 2^68020143 is an apocalyptic number.

68020143 is a deficient number, since it is larger than the sum of its proper divisors (22673385).

68020143 is a wasteful number, since it uses less digits than its factorization.

68020143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22673384.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 68020143 is about 8247.4325095753. The cubic root of 68020143 is about 408.2058085554.

The spelling of 68020143 in words is "sixty-eight million, twenty thousand, one hundred forty-three".