245402 has 4 divisors (see below), whose sum is σ = 368106. Its totient is φ = 122700.

The previous prime is 245389. The next prime is 245407. The reversal of 245402 is 204542.

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., 143641 + 101761 = 379^2 + 319^2 .

It is not an unprimeable number, because it can be changed into a prime (245407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61349 + ... + 61352.

2²⁴⁵⁴⁰² is an apocalyptic number.

245402 is a deficient number, since it is larger than the sum of its proper divisors (122704).

245402 is a wasteful number, since it uses less digits than its factorization.

245402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122703.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 245402 is about 495.3806617138. The cubic root of 245402 is about 62.6074524909.

Adding to 245402 its reverse (204542), we get a palindrome (449944).

It can be divided in two parts, 24540 and 2, that added together give a palindrome (24542).

The spelling of 245402 in words is "two hundred forty-five thousand, four hundred two".