1245025242 has 20 divisors (see below), whose sum is σ = 2789779146. Its totient is φ = 415008360.

The previous prime is 1245025241. The next prime is 1245025267. The reversal of 1245025242 is 2425205421.

It can be written as a sum of positive squares in only one way, i.e., 1232641881 + 12383361 = 35109^2 + 3519^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1245025241) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3842509 + ... + 3842832.

Almost surely, 2^1245025242 is an apocalyptic number.

1245025242 is an abundant number, since it is smaller than the sum of its proper divisors (1544753904).

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

1245025242 is an equidigital number, since it uses as much as digits as its factorization.

1245025242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7685355 (or 7685346 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 1245025242 is about 35284.9152188297. The cubic root of 1245025242 is about 1075.7864062193.

The spelling of 1245025242 in words is "one billion, two hundred forty-five million, twenty-five thousand, two hundred forty-two".