1222140142 has 4 divisors (see below), whose sum is σ = 1833210216. Its totient is φ = 611070070.

The previous prime is 1222140103. The next prime is 1222140163. The reversal of 1222140142 is 2410412221.

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

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, 305535034 + ... + 305535037.

It is an arithmetic number, because the mean of its divisors is an integer number (458302554).

Almost surely, 2^1222140142 is an apocalyptic number.

1222140142 is a deficient number, since it is larger than the sum of its proper divisors (611070074).

1222140142 is an equidigital number, since it uses as much as digits as its factorization.

1222140142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611070073.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1222140142 is about 34959.1210129774. The cubic root of 1222140142 is about 1069.1541753600.

Adding to 1222140142 its reverse (2410412221), we get a palindrome (3632552363).

The spelling of 1222140142 in words is "one billion, two hundred twenty-two million, one hundred forty thousand, one hundred forty-two".