1260001055 has 16 divisors (see below), whose sum is σ = 1617679200. Its totient is φ = 939288960.

The previous prime is 1260001049. The next prime is 1260001073. The reversal of 1260001055 is 5501000621.

It is not a de Polignac number, because 1260001055 - 2⁸ = 1260000799 is a prime.

It is a super-2 number, since 2×1260001055² = 3175205317202226050, 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 15 ways as a sum of consecutive naturals, for example, 102920 + ... + 114509.

It is an arithmetic number, because the mean of its divisors is an integer number (101104950).

Almost surely, 2^1260001055 is an apocalyptic number.

1260001055 is a deficient number, since it is larger than the sum of its proper divisors (357678145).

1260001055 is a wasteful number, since it uses less digits than its factorization.

1260001055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217514.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1260001055 is about 35496.4935592236. The cubic root of 1260001055 is about 1080.0825997067.

Adding to 1260001055 its reverse (5501000621), we get a palindrome (6761001676).

The spelling of 1260001055 in words is "one billion, two hundred sixty million, one thousand, fifty-five".