1225424142 has 24 divisors (see below), whose sum is σ = 2688697440. Its totient is φ = 403303680.

The previous prime is 1225424131. The next prime is 1225424149. The reversal of 1225424142 is 2414245221.

It is a happy number.

1225424142 is a `hidden beast` number, since 1 + 225 + 424 + 14 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225424149) 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, 429459 + ... + 432302.

It is an arithmetic number, because the mean of its divisors is an integer number (112029060).

Almost surely, 2^1225424142 is an apocalyptic number.

1225424142 is an abundant number, since it is smaller than the sum of its proper divisors (1463273298).

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

1225424142 is a wasteful number, since it uses less digits than its factorization.

1225424142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861848 (or 861845 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 1225424142 is about 35006.0586470399. The cubic root of 1225424142 is about 1070.1109565549.

Adding to 1225424142 its reverse (2414245221), we get a palindrome (3639669363).

The spelling of 1225424142 in words is "one billion, two hundred twenty-five million, four hundred twenty-four thousand, one hundred forty-two".