461722143 has 4 divisors (see below), whose sum is σ = 615629528. Its totient is φ = 307814760.

The previous prime is 461722139. The next prime is 461722187. The reversal of 461722143 is 341227164.

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

It is not a de Polignac number, because 461722143 - 2² = 461722139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 461722143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461722103) 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, 76953688 + ... + 76953693.

It is an arithmetic number, because the mean of its divisors is an integer number (153907382).

Almost surely, 2^461722143 is an apocalyptic number.

461722143 is a deficient number, since it is larger than the sum of its proper divisors (153907385).

461722143 is a wasteful number, since it uses less digits than its factorization.

461722143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153907384.

The product of its digits is 8064, while the sum is 30.

The square root of 461722143 is about 21487.7207493024. The cubic root of 461722143 is about 772.9063954398.

The spelling of 461722143 in words is "four hundred sixty-one million, seven hundred twenty-two thousand, one hundred forty-three".