402442 has 8 divisors (see below), whose sum is σ = 623232. Its totient is φ = 194700.

The previous prime is 402419. The next prime is 402443. The reversal of 402442 is 244204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (402443) 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, 3184 + ... + 3307.

It is an arithmetic number, because the mean of its divisors is an integer number (77904).

2⁴⁰²⁴⁴² is an apocalyptic number.

402442 is a deficient number, since it is larger than the sum of its proper divisors (220790).

402442 is a wasteful number, since it uses less digits than its factorization.

402442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6524.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 402442 is about 634.3831649721. The cubic root of 402442 is about 73.8302659574.

Adding to 402442 its reverse (244204), we get a palindrome (646646).

The spelling of 402442 in words is "four hundred two thousand, four hundred forty-two", and thus it is an iban number.