1011223142 has 32 divisors (see below), whose sum is σ = 1571733504. Its totient is φ = 487692000.

The previous prime is 1011223141. The next prime is 1011223153. The reversal of 1011223142 is 2413221101.

It is a self number, because there is not a number n which added to its sum of digits gives 1011223142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011223141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2710868 + ... + 2711240.

It is an arithmetic number, because the mean of its divisors is an integer number (49116672).

Almost surely, 2^1011223142 is an apocalyptic number.

1011223142 is a deficient number, since it is larger than the sum of its proper divisors (560510362).

1011223142 is a wasteful number, since it uses less digits than its factorization.

1011223142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1011223142 is about 31799.7349360022. The cubic root of 1011223142 is about 1003.7271385132.

Adding to 1011223142 its reverse (2413221101), we get a palindrome (3424444243).

The spelling of 1011223142 in words is "one billion, eleven million, two hundred twenty-three thousand, one hundred forty-two".