1056421144 has 8 divisors (see below), whose sum is σ = 1980789660. Its totient is φ = 528210568.

The previous prime is 1056421139. The next prime is 1056421159. The reversal of 1056421144 is 4411246501.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1056421144² = 2232051266980537472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66026314 + ... + 66026329.

Almost surely, 2^1056421144 is an apocalyptic number.

It is an amenable number.

1056421144 is a deficient number, since it is larger than the sum of its proper divisors (924368516).

1056421144 is a wasteful number, since it uses less digits than its factorization.

1056421144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132052649 (or 132052645 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1056421144 is about 32502.6328779685. The cubic root of 1056421144 is about 1018.4640293650.

Adding to 1056421144 its reverse (4411246501), we get a palindrome (5467667645).

The spelling of 1056421144 in words is "one billion, fifty-six million, four hundred twenty-one thousand, one hundred forty-four".