172402 has 4 divisors (see below), whose sum is σ = 258606. Its totient is φ = 86200.

The previous prime is 172399. The next prime is 172411. The reversal of 172402 is 204271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204271 = 359 ⋅569.

It can be written as a sum of positive squares in only one way, i.e., 168921 + 3481 = 411^2 + 59^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43099 + ... + 43102.

2¹⁷²⁴⁰² is an apocalyptic number.

172402 is a deficient number, since it is larger than the sum of its proper divisors (86204).

172402 is an equidigital number, since it uses as much as digits as its factorization.

172402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86203.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 172402 is about 415.2131982488. The cubic root of 172402 is about 55.6562703443.

Adding to 172402 its reverse (204271), we get a palindrome (376673).

The spelling of 172402 in words is "one hundred seventy-two thousand, four hundred two", and thus it is an iban number.