1055642205 has 24 divisors (see below), whose sum is σ = 1706917536. Its totient is φ = 557059680.

The previous prime is 1055642191. The next prime is 1055642213. The reversal of 1055642205 is 5022465501.

It is not a de Polignac number, because 1055642205 - 2¹⁴ = 1055625821 is a prime.

It is a super-2 number, since 2×1055642205² = 2228760929954524050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1301250 + ... + 1302060.

It is an arithmetic number, because the mean of its divisors is an integer number (71121564).

Almost surely, 2^1055642205 is an apocalyptic number.

1055642205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1055642205 is a deficient number, since it is larger than the sum of its proper divisors (651275331).

1055642205 is an frugal number, since it uses more digits than its factorization.

1055642205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737 (or 926 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 1055642205 is about 32490.6479621444. The cubic root of 1055642205 is about 1018.2136505525.

The spelling of 1055642205 in words is "one billion, fifty-five million, six hundred forty-two thousand, two hundred five".