1542228 has 12 divisors (see below), whose sum is σ = 3598560. Its totient is φ = 514072.

The previous prime is 1542221. The next prime is 1542239. The reversal of 1542228 is 8222451.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1542198 and 1542207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542221) 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, 64248 + ... + 64271.

It is an arithmetic number, because the mean of its divisors is an integer number (299880).

2^1542228 is an apocalyptic number.

It is an amenable number.

1542228 is an abundant number, since it is smaller than the sum of its proper divisors (2056332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1542228 is a wasteful number, since it uses less digits than its factorization.

1542228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128526 (or 128524 counting only the distinct ones).

The product of its digits is 1280, while the sum is 24.

The square root of 1542228 is about 1241.8647269328. The cubic root of 1542228 is about 115.5356985658.

Adding to 1542228 its reverse (8222451), we get a palindrome (9764679).

It can be divided in two parts, 1542 and 228, that added together give a triangular number (1770 = T₅₉).

The spelling of 1542228 in words is "one million, five hundred forty-two thousand, two hundred twenty-eight".