201423602 has 4 divisors (see below), whose sum is σ = 302135406. Its totient is φ = 100711800.

The previous prime is 201423601. The next prime is 201423613. The reversal of 201423602 is 206324102.

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

It can be written as a sum of positive squares in only one way, i.e., 187443481 + 13980121 = 13691^2 + 3739^2 .

It is a super-3 number, since 3×201423602³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (201423601) 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 as a sum of consecutive naturals, namely, 50355899 + ... + 50355902.

Almost surely, 2^201423602 is an apocalyptic number.

201423602 is a deficient number, since it is larger than the sum of its proper divisors (100711804).

201423602 is a wasteful number, since it uses less digits than its factorization.

201423602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100711803.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 201423602 is about 14192.3783066828. The cubic root of 201423602 is about 586.1878142449.

Adding to 201423602 its reverse (206324102), we get a palindrome (407747704).

The spelling of 201423602 in words is "two hundred one million, four hundred twenty-three thousand, six hundred two".