1249254387 has 8 divisors (see below), whose sum is σ = 1850747280. Its totient is φ = 832836240.

The previous prime is 1249254353. The next prime is 1249254451. The reversal of 1249254387 is 7834529421.

1249254387 is a `hidden beast` number, since 1 + 24 + 9 + 2 + 543 + 87 = 666.

It is not a de Polignac number, because 1249254387 - 2⁶ = 1249254323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1249254287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23134314 + ... + 23134367.

It is an arithmetic number, because the mean of its divisors is an integer number (231343410).

Almost surely, 2^1249254387 is an apocalyptic number.

1249254387 is a deficient number, since it is larger than the sum of its proper divisors (601492893).

1249254387 is an equidigital number, since it uses as much as digits as its factorization.

1249254387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46268690 (or 46268684 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 1249254387 is about 35344.7929262572. The cubic root of 1249254387 is about 1077.0031191474.

The spelling of 1249254387 in words is "one billion, two hundred forty-nine million, two hundred fifty-four thousand, three hundred eighty-seven".