1055780042 has 8 divisors (see below), whose sum is σ = 1583931396. Its totient is φ = 527802912.

The previous prime is 1055780041. The next prime is 1055780081. The reversal of 1055780042 is 2400875501.

It can be written as a sum of positive squares in 2 ways, for example, as 1053586681 + 2193361 = 32459^2 + 1481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1055780042² = 2229342994171043528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1055779990 and 1055780008.

It is not an unprimeable number, because it can be changed into a prime (1055780041) 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, 27173 + ... + 53384.

Almost surely, 2^1055780042 is an apocalyptic number.

1055780042 is a deficient number, since it is larger than the sum of its proper divisors (528151354).

1055780042 is an equidigital number, since it uses as much as digits as its factorization.

1055780042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87112.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 1055780042 is about 32492.7690725183. The cubic root of 1055780042 is about 1018.2579652538.

The spelling of 1055780042 in words is "one billion, fifty-five million, seven hundred eighty thousand, forty-two".