1249274427 has 8 divisors (see below), whose sum is σ = 1763681616. Its totient is φ = 783858432.

The previous prime is 1249274419. The next prime is 1249274431. The reversal of 1249274427 is 7244729421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1249274427 - 2³ = 1249274419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1249274447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12247738 + ... + 12247839.

It is an arithmetic number, because the mean of its divisors is an integer number (220460202).

Almost surely, 2^1249274427 is an apocalyptic number.

1249274427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1249274427 is a deficient number, since it is larger than the sum of its proper divisors (514407189).

1249274427 is a wasteful number, since it uses less digits than its factorization.

1249274427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24495597.

The product of its digits is 225792, while the sum is 42.

The square root of 1249274427 is about 35345.0764180812. The cubic root of 1249274427 is about 1077.0088780564.

The spelling of 1249274427 in words is "one billion, two hundred forty-nine million, two hundred seventy-four thousand, four hundred twenty-seven".