402513 has 4 divisors (see below), whose sum is σ = 536688. Its totient is φ = 268340.

The previous prime is 402511. The next prime is 402517. The reversal of 402513 is 315204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402513 - 2¹ = 402511 is a prime.

It is a D-number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 402492 and 402501.

It is not an unprimeable number, because it can be changed into a prime (402511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67083 + ... + 67088.

It is an arithmetic number, because the mean of its divisors is an integer number (134172).

2⁴⁰²⁵¹³ is an apocalyptic number.

It is an amenable number.

402513 is a deficient number, since it is larger than the sum of its proper divisors (134175).

402513 is a wasteful number, since it uses less digits than its factorization.

402513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134174.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 402513 is about 634.4391223750. The cubic root of 402513 is about 73.8346074863.

Adding to 402513 its reverse (315204), we get a palindrome (717717).

It can be divided in two parts, 4025 and 13, that multiplied together give a palindrome (52325).

The spelling of 402513 in words is "four hundred two thousand, five hundred thirteen".