1022021442 has 32 divisors (see below), whose sum is σ = 2445864960. Its totient is φ = 314467920.

The previous prime is 1022021431. The next prime is 1022021459. The reversal of 1022021442 is 2441202201.

1022021442 is a `hidden beast` number, since 1 + 0 + 220 + 2 + 1 + 442 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 727234 + ... + 728637.

It is an arithmetic number, because the mean of its divisors is an integer number (76433280).

Almost surely, 2^1022021442 is an apocalyptic number.

1022021442 is an abundant number, since it is smaller than the sum of its proper divisors (1423843518).

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

1022021442 is a wasteful number, since it uses less digits than its factorization.

1022021442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455895 (or 1455889 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1022021442 is about 31969.0700834416. The cubic root of 1022021442 is about 1007.2872476938.

Adding to 1022021442 its reverse (2441202201), we get a palindrome (3463223643).

The spelling of 1022021442 in words is "one billion, twenty-two million, twenty-one thousand, four hundred forty-two".