423140705 has 16 divisors (see below), whose sum is σ = 560168784. Its totient is φ = 304849920.

The previous prime is 423140701. The next prime is 423140717. The reversal of 423140705 is 507041324.

It can be written as a sum of positive squares in 8 ways, for example, as 143448529 + 279692176 = 11977^2 + 16724^2 .

It is not a de Polignac number, because 423140705 - 2² = 423140701 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423140701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76724 + ... + 82053.

It is an arithmetic number, because the mean of its divisors is an integer number (35010549).

Almost surely, 2^423140705 is an apocalyptic number.

It is an amenable number.

423140705 is a deficient number, since it is larger than the sum of its proper divisors (137028079).

423140705 is a wasteful number, since it uses less digits than its factorization.

423140705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158836.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 423140705 is about 20570.3841723970. The cubic root of 423140705 is about 750.7492985603.

The spelling of 423140705 in words is "four hundred twenty-three million, one hundred forty thousand, seven hundred five".