70402 has 4 divisors (see below), whose sum is σ = 105606. Its totient is φ = 35200.

The previous prime is 70393. The next prime is 70423. The reversal of 70402 is 20407.

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

It can be written as a sum of positive squares in only one way, i.e., 58081 + 12321 = 241^2 + 111^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 12.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17599 + ... + 17602.

2⁷⁰⁴⁰² is an apocalyptic number.

70402 is a deficient number, since it is larger than the sum of its proper divisors (35204).

70402 is a wasteful number, since it uses less digits than its factorization.

70402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35203.

The product of its (nonzero) digits is 56, while the sum is 13.

The square root of 70402 is about 265.3337520935. Note that the first 3 decimals coincide. The cubic root of 70402 is about 41.2915956297.

Adding to 70402 its reverse (20407), we get a palindrome (90809).

The spelling of 70402 in words is "seventy thousand, four hundred two", and thus it is an iban number.