1260988427 has 4 divisors (see below), whose sum is σ = 1287818016. Its totient is φ = 1234158840.

The previous prime is 1260988423. The next prime is 1260988439. The reversal of 1260988427 is 7248890621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1260988427 - 2² = 1260988423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 26829541 = 1260988427 / (1 + 2 + 6 + 0 + 9 + 8 + 8 + 4 + 2 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1260988423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13414724 + ... + 13414817.

It is an arithmetic number, because the mean of its divisors is an integer number (321954504).

Almost surely, 2^1260988427 is an apocalyptic number.

1260988427 is a deficient number, since it is larger than the sum of its proper divisors (26829589).

1260988427 is an equidigital number, since it uses as much as digits as its factorization.

1260988427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26829588.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 1260988427 is about 35510.3988572362. The cubic root of 1260988427 is about 1080.3646536698.

The spelling of 1260988427 in words is "one billion, two hundred sixty million, nine hundred eighty-eight thousand, four hundred twenty-seven".