402453 has 12 divisors (see below), whose sum is σ = 588588. Its totient is φ = 264960.

The previous prime is 402443. The next prime is 402487. The reversal of 402453 is 354204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 154449 + 248004 = 393^2 + 498^2 .

It is not a de Polignac number, because 402453 - 2⁸ = 402197 is a prime.

It is an Ulam number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402403) 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 11 ways as a sum of consecutive naturals, for example, 643 + ... + 1103.

It is an arithmetic number, because the mean of its divisors is an integer number (49049).

2⁴⁰²⁴⁵³ is an apocalyptic number.

It is an amenable number.

402453 is a deficient number, since it is larger than the sum of its proper divisors (186135).

402453 is a wasteful number, since it uses less digits than its factorization.

402453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 402453 is about 634.3918347520. The cubic root of 402453 is about 73.8309386221.

Adding to 402453 its reverse (354204), we get a palindrome (756657).

It can be divided in two parts, 402 and 453, that multiplied together give a triangular number (182106 = T₆₀₃).

The spelling of 402453 in words is "four hundred two thousand, four hundred fifty-three".