423215143 has 4 divisors (see below), whose sum is σ = 455770168. Its totient is φ = 390660120.

The previous prime is 423215137. The next prime is 423215147. The reversal of 423215143 is 341512324.

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 423215143 - 2¹³ = 423206951 is a prime.

It is a super-2 number, since 2×423215143² = 358222114529020898, 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 (423215147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16277493 + ... + 16277518.

It is an arithmetic number, because the mean of its divisors is an integer number (113942542).

Almost surely, 2^423215143 is an apocalyptic number.

423215143 is a deficient number, since it is larger than the sum of its proper divisors (32555025).

423215143 is a wasteful number, since it uses less digits than its factorization.

423215143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32555024.

The product of its digits is 2880, while the sum is 25.

The square root of 423215143 is about 20572.1934416338. The cubic root of 423215143 is about 750.7933193781.

Adding to 423215143 its reverse (341512324), we get a palindrome (764727467).

The spelling of 423215143 in words is "four hundred twenty-three million, two hundred fifteen thousand, one hundred forty-three".