423004381 has 4 divisors (see below), whose sum is σ = 424009564. Its totient is φ = 421999200.

The previous prime is 423004367. The next prime is 423004409. The reversal of 423004381 is 183400324.

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

It can be written as a sum of positive squares in 2 ways, for example, as 196953156 + 226051225 = 14034^2 + 15035^2 .

It is a cyclic number.

It is not a de Polignac number, because 423004381 - 2¹⁵ = 422971613 is a prime.

It is a super-2 number, since 2×423004381² = 357865412690386322, 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 (423004301) 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, 501960 + ... + 502801.

It is an arithmetic number, because the mean of its divisors is an integer number (106002391).

Almost surely, 2^423004381 is an apocalyptic number.

It is an amenable number.

423004381 is a deficient number, since it is larger than the sum of its proper divisors (1005183).

423004381 is a wasteful number, since it uses less digits than its factorization.

423004381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005182.

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

The square root of 423004381 is about 20567.0703066820. The cubic root of 423004381 is about 750.6686664845.

The spelling of 423004381 in words is "four hundred twenty-three million, four thousand, three hundred eighty-one".