1423742173 has 8 divisors (see below), whose sum is σ = 1629819392. Its totient is φ = 1218336336.

The previous prime is 1423742149. The next prime is 1423742183. The reversal of 1423742173 is 3712473241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1423742173 - 2¹³ = 1423733981 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 (1423742183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163290 + ... + 171787.

It is an arithmetic number, because the mean of its divisors is an integer number (203727424).

Almost surely, 2^1423742173 is an apocalyptic number.

It is an amenable number.

1423742173 is a deficient number, since it is larger than the sum of its proper divisors (206077219).

1423742173 is an equidigital number, since it uses as much as digits as its factorization.

1423742173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335691.

The product of its digits is 28224, while the sum is 34.

The square root of 1423742173 is about 37732.5081726619. The cubic root of 1423742173 is about 1124.9773619807.

The spelling of 1423742173 in words is "one billion, four hundred twenty-three million, seven hundred forty-two thousand, one hundred seventy-three".