1055121413 has 4 divisors (see below), whose sum is σ = 1091504940. Its totient is φ = 1018737888.

The previous prime is 1055121383. The next prime is 1055121443. The reversal of 1055121413 is 3141215501.

1055121413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (1055121383) and next prime (1055121443).

It can be written as a sum of positive squares in 2 ways, for example, as 721620769 + 333500644 = 26863^2 + 18262^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055121413 - 2⁶ = 1055121349 is a prime.

It is a super-2 number, since 2×1055121413² = 2226562392342233138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055121443) 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, 18191720 + ... + 18191777.

It is an arithmetic number, because the mean of its divisors is an integer number (272876235).

Almost surely, 2^1055121413 is an apocalyptic number.

It is an amenable number.

1055121413 is a deficient number, since it is larger than the sum of its proper divisors (36383527).

1055121413 is an equidigital number, since it uses as much as digits as its factorization.

1055121413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36383526.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1055121413 is about 32482.6324826052. The cubic root of 1055121413 is about 1018.0461806947.

Adding to 1055121413 its reverse (3141215501), we get a palindrome (4196336914).

The spelling of 1055121413 in words is "one billion, fifty-five million, one hundred twenty-one thousand, four hundred thirteen".