1249739030 has 16 divisors (see below), whose sum is σ = 2257897680. Its totient is φ = 498036192.

The previous prime is 1249739027. The next prime is 1249739033. The reversal of 1249739030 is 309379421.

It is an interprime number because it is at equal distance from previous prime (1249739027) and next prime (1249739033).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249739033) 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, 229604 + ... + 234983.

It is an arithmetic number, because the mean of its divisors is an integer number (141118605).

Almost surely, 2^1249739030 is an apocalyptic number.

1249739030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1249739030 is a deficient number, since it is larger than the sum of its proper divisors (1008158650).

1249739030 is a wasteful number, since it uses less digits than its factorization.

1249739030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464863.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 1249739030 is about 35351.6481935425. The cubic root of 1249739030 is about 1077.1423740888.

The spelling of 1249739030 in words is "one billion, two hundred forty-nine million, seven hundred thirty-nine thousand, thirty".