1542224 has 20 divisors (see below), whose sum is σ = 3018036. Its totient is φ = 763392.

The previous prime is 1542221. The next prime is 1542239. The reversal of 1542224 is 4222451.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 53824 + 1488400 = 232^2 + 1220^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1542196 and 1542205.

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, 1382 + ... + 2234.

2^1542224 is an apocalyptic number.

It is an amenable number.

1542224 is a deficient number, since it is larger than the sum of its proper divisors (1475812).

1542224 is a wasteful number, since it uses less digits than its factorization.

1542224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974 (or 968 counting only the distinct ones).

The product of its digits is 640, while the sum is 20.

The square root of 1542224 is about 1241.8631164504. The cubic root of 1542224 is about 115.5355986794.

Adding to 1542224 its reverse (4222451), we get a palindrome (5764675).

The spelling of 1542224 in words is "one million, five hundred forty-two thousand, two hundred twenty-four".