402030403 has 4 divisors (see below), whose sum is σ = 404693008. Its totient is φ = 399367800.

The previous prime is 402030401. The next prime is 402030427. The reversal of 402030403 is 304030204.

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

It is a cyclic number.

It is not a de Polignac number, because 402030403 - 2¹ = 402030401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402030401) 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, 1331076 + ... + 1331377.

It is an arithmetic number, because the mean of its divisors is an integer number (101173252).

Almost surely, 2^402030403 is an apocalyptic number.

402030403 is a deficient number, since it is larger than the sum of its proper divisors (2662605).

402030403 is a wasteful number, since it uses less digits than its factorization.

402030403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662604.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 402030403 is about 20050.6958233374. The cubic root of 402030403 is about 738.0508743752.

Adding to 402030403 its reverse (304030204), we get a palindrome (706060607).

The spelling of 402030403 in words is "four hundred two million, thirty thousand, four hundred three".