1055420405 has 8 divisors (see below), whose sum is σ = 1363927992. Its totient is φ = 779387328.

The previous prime is 1055420393. The next prime is 1055420413. The reversal of 1055420405 is 5040245501.

It can be written as a sum of positive squares in 4 ways, for example, as 222636241 + 832784164 = 14921^2 + 28858^2 .

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 1055420405 - 2¹² = 1055416309 is a prime.

It is a super-2 number, since 2×1055420405² = 2227824462580728050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8118554 + ... + 8118683.

It is an arithmetic number, because the mean of its divisors is an integer number (170490999).

Almost surely, 2^1055420405 is an apocalyptic number.

It is an amenable number.

1055420405 is a deficient number, since it is larger than the sum of its proper divisors (308507587).

1055420405 is a wasteful number, since it uses less digits than its factorization.

1055420405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16237255.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 1055420405 is about 32487.2344929512. The cubic root of 1055420405 is about 1018.1423335838.

Adding to 1055420405 its reverse (5040245501), we get a palindrome (6095665906).

The spelling of 1055420405 in words is "one billion, fifty-five million, four hundred twenty thousand, four hundred five".