1422724 has 12 divisors (see below), whose sum is σ = 2557324.
Its totient is φ = 692064.
The previous prime is 1422721. The next prime is 1422727. The reversal of 1422724 is 4272241.
Adding to 1422724 its reverse (4272241), we get a palindrome (5694965).
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (1422721) and next prime (1422727).
It can be written as a sum of positive squares in 2 ways, for example, as 1368900 + 53824 = 1170^2 + 232^2
It is a junction number, because it is equal to n+sod(n) for n = 1422695 and 1422704.
It is not an unprimeable number, because it can be changed into a prime (1422721) 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, 4659 + ... + 4954.
21422724 is an apocalyptic number.
It is an amenable number.
1422724 is a deficient number, since it is larger than the sum of its proper divisors (1134600).
1422724 is a wasteful number, since it uses less digits than its factorization.
1422724 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9654 (or 9652 counting only the distinct ones).
The product of its digits is 896, while the sum is 22.
The square root of 1422724 is about 1192.7799461762.
The cubic root of 1422724 is about 112.4709126446.
The spelling of 1422724 in words is "one million, four hundred twenty-two thousand, seven hundred twenty-four".