146222143 has 4 divisors (see below), whose sum is σ = 146255328. Its totient is φ = 146188960.

The previous prime is 146222137. The next prime is 146222149. The reversal of 146222143 is 341222641.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341222641 = 23 ⋅14835767.

It is an interprime number because it is at equal distance from previous prime (146222137) and next prime (146222149).

It is a cyclic number.

It is not a de Polignac number, because 146222143 - 2⁹ = 146221631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146222149) 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, 8746 + ... + 19207.

It is an arithmetic number, because the mean of its divisors is an integer number (36563832).

Almost surely, 2^146222143 is an apocalyptic number.

146222143 is a deficient number, since it is larger than the sum of its proper divisors (33185).

146222143 is an equidigital number, since it uses as much as digits as its factorization.

146222143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33184.

The product of its digits is 2304, while the sum is 25.

The square root of 146222143 is about 12092.2348223974. The cubic root of 146222143 is about 526.8306678720.

Adding to 146222143 its reverse (341222641), we get a palindrome (487444784).

The spelling of 146222143 in words is "one hundred forty-six million, two hundred twenty-two thousand, one hundred forty-three".