1022140142 has 4 divisors (see below), whose sum is σ = 1533210216. Its totient is φ = 511070070.

The previous prime is 1022140121. The next prime is 1022140151. The reversal of 1022140142 is 2410412201.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1022140142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255535034 + ... + 255535037.

It is an arithmetic number, because the mean of its divisors is an integer number (383302554).

Almost surely, 2^1022140142 is an apocalyptic number.

1022140142 is a deficient number, since it is larger than the sum of its proper divisors (511070074).

1022140142 is an equidigital number, since it uses as much as digits as its factorization.

1022140142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511070073.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1022140142 is about 31970.9265114416. The cubic root of 1022140142 is about 1007.3262424294.

Adding to 1022140142 its reverse (2410412201), we get a palindrome (3432552343).

The spelling of 1022140142 in words is "one billion, twenty-two million, one hundred forty thousand, one hundred forty-two".