1229424 has 40 divisors (see below), whose sum is σ = 3630720. Its totient is φ = 351168.

The previous prime is 1229401. The next prime is 1229443. The reversal of 1229424 is 4249221.

It is a super-2 number, since 2×1229424² = 3022966743552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 1229394 and 1229403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1494 + ... + 2165.

It is an arithmetic number, because the mean of its divisors is an integer number (90768).

2^1229424 is an apocalyptic number.

1229424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1229424 is an abundant number, since it is smaller than the sum of its proper divisors (2401296).

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

1229424 is a wasteful number, since it uses less digits than its factorization.

1229424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3677 (or 3671 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 1229424 is about 1108.7939393774. The cubic root of 1229424 is about 107.1273994208.

It can be divided in two parts, 1229 and 424, that added together give a triangular number (1653 = T₅₇).

The spelling of 1229424 in words is "one million, two hundred twenty-nine thousand, four hundred twenty-four".