1057768042 has 4 divisors (see below), whose sum is σ = 1586652066. Its totient is φ = 528884020.

The previous prime is 1057768037. The next prime is 1057768043. The reversal of 1057768042 is 2408677501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1025856841 + 31911201 = 32029^2 + 5649^2 .

It is a super-2 number, since 2×1057768042² = 2237746461353027528, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1057767986 and 1057768004.

It is not an unprimeable number, because it can be changed into a prime (1057768043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264442009 + ... + 264442012.

Almost surely, 2^1057768042 is an apocalyptic number.

1057768042 is a deficient number, since it is larger than the sum of its proper divisors (528884024).

1057768042 is an equidigital number, since it uses as much as digits as its factorization.

1057768042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528884023.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 1057768042 is about 32523.3461070659. The cubic root of 1057768042 is about 1018.8966802386.

The spelling of 1057768042 in words is "one billion, fifty-seven million, seven hundred sixty-eight thousand, forty-two".