1242031224 has 48 divisors (see below), whose sum is σ = 3612033000. Its totient is φ = 354865728.

The previous prime is 1242031199. The next prime is 1242031229. The reversal of 1242031224 is 4221302421.

It is a super-2 number, since 2×1242031224² = 3085283122781876352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1242031224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242031229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 526899 + ... + 529250.

Almost surely, 2^1242031224 is an apocalyptic number.

1242031224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1242031224 is an abundant number, since it is smaller than the sum of its proper divisors (2370001776).

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

1242031224 is a wasteful number, since it uses less digits than its factorization.

1242031224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056172 (or 1056161 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1242031224 is about 35242.4633645266. The cubic root of 1242031224 is about 1074.9233690463.

Adding to 1242031224 its reverse (4221302421), we get a palindrome (5463333645).

The spelling of 1242031224 in words is "one billion, two hundred forty-two million, thirty-one thousand, two hundred twenty-four".