1249340085 has 64 divisors (see below), whose sum is σ = 2580072960. Its totient is φ = 561738240.

The previous prime is 1249340023. The next prime is 1249340101. The reversal of 1249340085 is 5800439421.

1249340085 is a `hidden beast` number, since 1 + 249 + 3 + 400 + 8 + 5 = 666.

It is not a de Polignac number, because 1249340085 - 2²³ = 1240951477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46809 + ... + 68481.

It is an arithmetic number, because the mean of its divisors is an integer number (40313640).

Almost surely, 2^1249340085 is an apocalyptic number.

1249340085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1249340085 is an abundant number, since it is smaller than the sum of its proper divisors (1330732875).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1249340085 is a wasteful number, since it uses less digits than its factorization.

1249340085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21755 (or 21749 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1249340085 is about 35346.0052198265. The cubic root of 1249340085 is about 1077.0277458111.

The spelling of 1249340085 in words is "one billion, two hundred forty-nine million, three hundred forty thousand, eighty-five".