403620243 has 32 divisors (see below), whose sum is σ = 590284800. Its totient is φ = 243824256.

The previous prime is 403620233. The next prime is 403620257. The reversal of 403620243 is 342026304.

It is a happy number.

It is not a de Polignac number, because 403620243 - 2⁸ = 403619987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (403620223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 828546 + ... + 829032.

It is an arithmetic number, because the mean of its divisors is an integer number (18446400).

Almost surely, 2^403620243 is an apocalyptic number.

403620243 is a deficient number, since it is larger than the sum of its proper divisors (186664557).

403620243 is a wasteful number, since it uses less digits than its factorization.

403620243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 403620243 is about 20090.3022127593. The cubic root of 403620243 is about 739.0224754100.

Adding to 403620243 its reverse (342026304), we get a palindrome (745646547).

The spelling of 403620243 in words is "four hundred three million, six hundred twenty thousand, two hundred forty-three".