1055742091 has 2 divisors, whose sum is σ = 1055742092. Its totient is φ = 1055742090.

The previous prime is 1055742073. The next prime is 1055742137. The reversal of 1055742091 is 1902475501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1055742091 - 2⁷ = 1055741963 is a prime.

It is a super-2 number, since 2×1055742091² = 2229182725418104562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1055742001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527871045 + 527871046.

It is an arithmetic number, because the mean of its divisors is an integer number (527871046).

Almost surely, 2^1055742091 is an apocalyptic number.

1055742091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055742091 is an equidigital number, since it uses as much as digits as its factorization.

1055742091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 1055742091 is about 32492.1850757994. The cubic root of 1055742091 is about 1018.2457643630.

The spelling of 1055742091 in words is "one billion, fifty-five million, seven hundred forty-two thousand, ninety-one".