1145021042 has 16 divisors (see below), whose sum is σ = 1892225664. Its totient is φ = 515310000.

The previous prime is 1145021041. The next prime is 1145021051. The reversal of 1145021042 is 2401205411.

It is a happy number.

It is a super-2 number, since 2×1145021042² = 2622146373245531528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1145021041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255434 + ... + 259877.

It is an arithmetic number, because the mean of its divisors is an integer number (118264104).

Almost surely, 2^1145021042 is an apocalyptic number.

1145021042 is a deficient number, since it is larger than the sum of its proper divisors (747204622).

1145021042 is a wasteful number, since it uses less digits than its factorization.

1145021042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515425.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1145021042 is about 33838.1595539710. The cubic root of 1145021042 is about 1046.1753651630.

Adding to 1145021042 its reverse (2401205411), we get a palindrome (3546226453).

The spelling of 1145021042 in words is "one billion, one hundred forty-five million, twenty-one thousand, forty-two".