542402 has 32 divisors (see below), whose sum is σ = 1026432. Its totient is φ = 209664.

The previous prime is 542401. The next prime is 542441. The reversal of 542402 is 204245.

542402 = 74² + 75² + ... + 126².

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (542401) 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 15 ways as a sum of consecutive naturals, for example, 10208 + ... + 10260.

It is an arithmetic number, because the mean of its divisors is an integer number (32076).

2⁵⁴²⁴⁰² is an apocalyptic number.

542402 is a deficient number, since it is larger than the sum of its proper divisors (484030).

542402 is a wasteful number, since it uses less digits than its factorization.

542402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122.

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

The square root of 542402 is about 736.4794633932. The cubic root of 542402 is about 81.5530912308.

Adding to 542402 its reverse (204245), we get a palindrome (746647).

The spelling of 542402 in words is "five hundred forty-two thousand, four hundred two".