1011212442 has 24 divisors (see below), whose sum is σ = 2250176916. Its totient is φ = 327960576.

The previous prime is 1011212431. The next prime is 1011212443. The reversal of 1011212442 is 2442121101.

1011212442 is a `hidden beast` number, since 1 + 0 + 11 + 212 + 442 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 885122001 + 126090441 = 29751^2 + 11229^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1011212443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 758503 + ... + 759834.

Almost surely, 2^1011212442 is an apocalyptic number.

1011212442 is an abundant number, since it is smaller than the sum of its proper divisors (1238964474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1011212442 is a wasteful number, since it uses less digits than its factorization.

1011212442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518382 (or 1518379 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1011212442 is about 31799.5666951611. The cubic root of 1011212442 is about 1003.7235982731.

Adding to 1011212442 its reverse (2442121101), we get a palindrome (3453333543).

The spelling of 1011212442 in words is "one billion, eleven million, two hundred twelve thousand, four hundred forty-two".