1028751142 has 4 divisors (see below), whose sum is σ = 1543126716. Its totient is φ = 514375570.

The previous prime is 1028751121. The next prime is 1028751149. The reversal of 1028751142 is 2411578201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2411578201 = 29 ⋅83157869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028751149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257187784 + ... + 257187787.

It is an arithmetic number, because the mean of its divisors is an integer number (385781679).

Almost surely, 2^1028751142 is an apocalyptic number.

1028751142 is a deficient number, since it is larger than the sum of its proper divisors (514375574).

1028751142 is an equidigital number, since it uses as much as digits as its factorization.

1028751142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514375573.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 1028751142 is about 32074.1506824421. The cubic root of 1028751142 is about 1009.4933059541.

The spelling of 1028751142 in words is "one billion, twenty-eight million, seven hundred fifty-one thousand, one hundred forty-two".