1225233142 has 48 divisors (see below), whose sum is σ = 2195804160. Its totient is φ = 510974352.

The previous prime is 1225233131. The next prime is 1225233143. The reversal of 1225233142 is 2413325221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225233143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2018203 + ... + 2018809.

It is an arithmetic number, because the mean of its divisors is an integer number (45745920).

Almost surely, 2^1225233142 is an apocalyptic number.

1225233142 is a deficient number, since it is larger than the sum of its proper divisors (970571018).

1225233142 is a wasteful number, since it uses less digits than its factorization.

1225233142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145 (or 1138 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 1225233142 is about 35003.3304415451. The cubic root of 1225233142 is about 1070.0553562650.

Adding to 1225233142 its reverse (2413325221), we get a palindrome (3638558363).

The spelling of 1225233142 in words is "one billion, two hundred twenty-five million, two hundred thirty-three thousand, one hundred forty-two".