1021142145 has 32 divisors (see below), whose sum is σ = 1731715200. Its totient is φ = 512046080.

The previous prime is 1021142119. The next prime is 1021142173. The reversal of 1021142145 is 5412411201.

1021142145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021142145 - 2⁶ = 1021142081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399331 + ... + 401879.

It is an arithmetic number, because the mean of its divisors is an integer number (54116100).

Almost surely, 2^1021142145 is an apocalyptic number.

1021142145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1021142145 is a deficient number, since it is larger than the sum of its proper divisors (710573055).

1021142145 is a wasteful number, since it uses less digits than its factorization.

1021142145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4145.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1021142145 is about 31955.3148161616. The cubic root of 1021142145 is about 1006.9982913354.

Adding to 1021142145 its reverse (5412411201), we get a palindrome (6433553346).

The spelling of 1021142145 in words is "one billion, twenty-one million, one hundred forty-two thousand, one hundred forty-five".