622542143 has 4 divisors (see below), whose sum is σ = 623487480. Its totient is φ = 621596808.

The previous prime is 622542139. The next prime is 622542203. The reversal of 622542143 is 341245226.

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 622542143 - 2² = 622542139 is a prime.

It is a super-2 number, since 2×622542143² = 775117439622064898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622542113) 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, 471680 + ... + 472997.

It is an arithmetic number, because the mean of its divisors is an integer number (155871870).

Almost surely, 2^622542143 is an apocalyptic number.

622542143 is a deficient number, since it is larger than the sum of its proper divisors (945337).

622542143 is an equidigital number, since it uses as much as digits as its factorization.

622542143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945336.

The product of its digits is 11520, while the sum is 29.

The square root of 622542143 is about 24950.7944362499. The cubic root of 622542143 is about 853.8657339280.

Adding to 622542143 its reverse (341245226), we get a palindrome (963787369).

The spelling of 622542143 in words is "six hundred twenty-two million, five hundred forty-two thousand, one hundred forty-three".