1042161555 has 8 divisors (see below), whose sum is σ = 1667458512. Its totient is φ = 555819488.

The previous prime is 1042161553. The next prime is 1042161581. The reversal of 1042161555 is 5551612401.

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

It is a cyclic number.

It is not a de Polignac number, because 1042161555 - 2¹ = 1042161553 is a prime.

It is a super-2 number, since 2×1042161555² = 2172201413440036050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1042161553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34738704 + ... + 34738733.

It is an arithmetic number, because the mean of its divisors is an integer number (208432314).

Almost surely, 2^1042161555 is an apocalyptic number.

1042161555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1042161555 is a deficient number, since it is larger than the sum of its proper divisors (625296957).

1042161555 is an equidigital number, since it uses as much as digits as its factorization.

1042161555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69477445.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 1042161555 is about 32282.5270850967. The cubic root of 1042161555 is about 1013.8608410892.

Adding to 1042161555 its reverse (5551612401), we get a palindrome (6593773956).

The spelling of 1042161555 in words is "one billion, forty-two million, one hundred sixty-one thousand, five hundred fifty-five".