402470 has 16 divisors (see below), whose sum is σ = 731808. Its totient is φ = 159360.

The previous prime is 402443. The next prime is 402487. The reversal of 402470 is 74204.

402470 is nontrivially palindromic in base 16.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

402470 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 1550 + ... + 1790.

It is an arithmetic number, because the mean of its divisors is an integer number (45738).

2⁴⁰²⁴⁷⁰ is an apocalyptic number.

402470 is a deficient number, since it is larger than the sum of its proper divisors (329338).

402470 is a wasteful number, since it uses less digits than its factorization.

402470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415.

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 402470 is about 634.4052332697. The cubic root of 402470 is about 73.8319781706.

Adding to 402470 its reverse (74204), we get a palindrome (476674).

The spelling of 402470 in words is "four hundred two thousand, four hundred seventy", and thus it is an iban number.