1022142043 has 4 divisors (see below), whose sum is σ = 1100768368. Its totient is φ = 943515720.

The previous prime is 1022142007. The next prime is 1022142061. The reversal of 1022142043 is 3402412201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3402412201 = 38993 ⋅87257.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022142043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1022142043.

It is not an unprimeable number, because it can be changed into a prime (1022142073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39313143 + ... + 39313168.

It is an arithmetic number, because the mean of its divisors is an integer number (275192092).

Almost surely, 2^1022142043 is an apocalyptic number.

1022142043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1022142043 is a deficient number, since it is larger than the sum of its proper divisors (78626325).

1022142043 is an equidigital number, since it uses as much as digits as its factorization.

1022142043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78626324.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1022142043 is about 31970.9562415640. The cubic root of 1022142043 is about 1007.3268669119.

Adding to 1022142043 its reverse (3402412201), we get a palindrome (4424554244).

The spelling of 1022142043 in words is "one billion, twenty-two million, one hundred forty-two thousand, forty-three".