1020251144 has 32 divisors (see below), whose sum is σ = 2110341600. Its totient is φ = 458536320.

The previous prime is 1020251119. The next prime is 1020251149. The reversal of 1020251144 is 4411520201.

It is a happy number.

1020251144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1020251149) 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, 57302 + ... + 72965.

It is an arithmetic number, because the mean of its divisors is an integer number (65948175).

Almost surely, 2^1020251144 is an apocalyptic number.

It is an amenable number.

1020251144 is an abundant number, since it is smaller than the sum of its proper divisors (1090090456).

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

1020251144 is a wasteful number, since it uses less digits than its factorization.

1020251144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130373 (or 130369 counting only the distinct ones).

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

The square root of 1020251144 is about 31941.3704151841. The cubic root of 1020251144 is about 1006.7053195300.

Adding to 1020251144 its reverse (4411520201), we get a palindrome (5431771345).

The spelling of 1020251144 in words is "one billion, twenty million, two hundred fifty-one thousand, one hundred forty-four".