1245111378 has 32 divisors (see below), whose sum is σ = 2847882240. Its totient is φ = 355506960.

The previous prime is 1245111349. The next prime is 1245111379. The reversal of 1245111378 is 8731115421.

It is not an unprimeable number, because it can be changed into a prime (1245111379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58843 + ... + 77153.

It is an arithmetic number, because the mean of its divisors is an integer number (88996320).

Almost surely, 2^1245111378 is an apocalyptic number.

1245111378 is an abundant number, since it is smaller than the sum of its proper divisors (1602770862).

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

1245111378 is a wasteful number, since it uses less digits than its factorization.

1245111378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19942.

The product of its digits is 6720, while the sum is 33.

The square root of 1245111378 is about 35286.1357759673. The cubic root of 1245111378 is about 1075.8112147661.

Adding to 1245111378 its reverse (8731115421), we get a palindrome (9976226799).

The spelling of 1245111378 in words is "one billion, two hundred forty-five million, one hundred eleven thousand, three hundred seventy-eight".