1051421568 has 32 divisors (see below), whose sum is σ = 2792839560. Its totient is φ = 350473728.

The previous prime is 1051421561. The next prime is 1051421573. The reversal of 1051421568 is 8651241501.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1051421568² = 2210974627311157248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051421561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1368655 + ... + 1369422.

Almost surely, 2^1051421568 is an apocalyptic number.

It is an amenable number.

1051421568 is an abundant number, since it is smaller than the sum of its proper divisors (1741417992).

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

1051421568 is an equidigital number, since it uses as much as digits as its factorization.

1051421568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2738094 (or 2738082 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 1051421568 is about 32425.6313431211. The cubic root of 1051421568 is about 1016.8548409310.

The spelling of 1051421568 in words is "one billion, fifty-one million, four hundred twenty-one thousand, five hundred sixty-eight".