1245775422 has 64 divisors (see below), whose sum is σ = 2602483200. Its totient is φ = 397229184.

The previous prime is 1245775357. The next prime is 1245775423. The reversal of 1245775422 is 2245775421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245775423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6260079 + ... + 6260277.

It is an arithmetic number, because the mean of its divisors is an integer number (40663800).

Almost surely, 2^1245775422 is an apocalyptic number.

1245775422 is an abundant number, since it is smaller than the sum of its proper divisors (1356707778).

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

1245775422 is a wasteful number, since it uses less digits than its factorization.

1245775422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577.

The product of its digits is 156800, while the sum is 39.

The square root of 1245775422 is about 35295.5439397100. The cubic root of 1245775422 is about 1076.0024316681.

Subtracting 1245775422 from its reverse (2245775421), we obtain a palindrome (999999999).

The spelling of 1245775422 in words is "one billion, two hundred forty-five million, seven hundred seventy-five thousand, four hundred twenty-two".