1020043142 has 4 divisors (see below), whose sum is σ = 1530064716. Its totient is φ = 510021570.

The previous prime is 1020043111. The next prime is 1020043147. The reversal of 1020043142 is 2413400201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2413400201 = 29833 ⋅80897.

It is a self number, because there is not a number n which added to its sum of digits gives 1020043142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020043147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255010784 + ... + 255010787.

It is an arithmetic number, because the mean of its divisors is an integer number (382516179).

Almost surely, 2^1020043142 is an apocalyptic number.

1020043142 is a deficient number, since it is larger than the sum of its proper divisors (510021574).

1020043142 is an equidigital number, since it uses as much as digits as its factorization.

1020043142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510021573.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1020043142 is about 31938.1142524101. The cubic root of 1020043142 is about 1006.6369014244.

Adding to 1020043142 its reverse (2413400201), we get a palindrome (3433443343).

The spelling of 1020043142 in words is "one billion, twenty million, forty-three thousand, one hundred forty-two".