1207102155 has 16 divisors (see below), whose sum is σ = 2207272704. Its totient is φ = 551818080.

The previous prime is 1207102121. The next prime is 1207102157. The reversal of 1207102155 is 5512017021.

It is a de Polignac number, because none of the positive numbers 2^k-1207102155 is a prime.

It is a super-2 number, since 2×1207102155² = 2914191225211288050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1207102157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5748001 + ... + 5748210.

It is an arithmetic number, because the mean of its divisors is an integer number (137954544).

Almost surely, 2^1207102155 is an apocalyptic number.

1207102155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1207102155 is a deficient number, since it is larger than the sum of its proper divisors (1000170549).

1207102155 is a wasteful number, since it uses less digits than its factorization.

1207102155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11496226.

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 1207102155 is about 34743.3756995488. The cubic root of 1207102155 is about 1064.7508818016.

Adding to 1207102155 its reverse (5512017021), we get a palindrome (6719119176).

The spelling of 1207102155 in words is "one billion, two hundred seven million, one hundred two thousand, one hundred fifty-five".