1267130061 has 12 divisors (see below), whose sum is σ = 1898088192. Its totient is φ = 844753212.

The previous prime is 1267130057. The next prime is 1267130093. The reversal of 1267130061 is 1600317621.

It is not a de Polignac number, because 1267130061 - 2² = 1267130057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1267130021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2607021 + ... + 2607506.

It is an arithmetic number, because the mean of its divisors is an integer number (158174016).

Almost surely, 2^1267130061 is an apocalyptic number.

It is an amenable number.

1267130061 is a deficient number, since it is larger than the sum of its proper divisors (630958131).

1267130061 is an frugal number, since it uses more digits than its factorization.

1267130061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5214542 (or 5214530 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 1267130061 is about 35596.7703731673. The cubic root of 1267130061 is about 1082.1157829069.

Adding to 1267130061 its reverse (1600317621), we get a palindrome (2867447682).

It can be divided in two parts, 1267 and 130061, that added together give a triangular number (131328 = T₅₁₂).

The spelling of 1267130061 in words is "one billion, two hundred sixty-seven million, one hundred thirty thousand, sixty-one".