1225344142 has 32 divisors (see below), whose sum is σ = 2024092800. Its totient is φ = 551728800.

The previous prime is 1225344119. The next prime is 1225344151. The reversal of 1225344142 is 2414435221.

It is a super-3 number, since 3×1225344142³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1225344142.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1492092 + ... + 1492912.

It is an arithmetic number, because the mean of its divisors is an integer number (63252900).

Almost surely, 2^1225344142 is an apocalyptic number.

1225344142 is a deficient number, since it is larger than the sum of its proper divisors (798748658).

1225344142 is a wasteful number, since it uses less digits than its factorization.

1225344142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392.

The product of its digits is 7680, while the sum is 28.

The square root of 1225344142 is about 35004.9159690464. The cubic root of 1225344142 is about 1070.0876691786.

Adding to 1225344142 its reverse (2414435221), we get a palindrome (3639779363).

The spelling of 1225344142 in words is "one billion, two hundred twenty-five million, three hundred forty-four thousand, one hundred forty-two".