1249320090 has 32 divisors (see below), whose sum is σ = 3024910656. Its totient is φ = 330202880.

The previous prime is 1249320071. The next prime is 1249320109. The reversal of 1249320090 is 900239421.

It is an interprime number because it is at equal distance from previous prime (1249320071) and next prime (1249320109).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180876 + ... + 187655.

It is an arithmetic number, because the mean of its divisors is an integer number (94528458).

Almost surely, 2^1249320090 is an apocalyptic number.

1249320090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1249320090 is an abundant number, since it is smaller than the sum of its proper divisors (1775590566).

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

1249320090 is a wasteful number, since it uses less digits than its factorization.

1249320090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368654.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1249320090 is about 35345.7223720212. The cubic root of 1249320090 is about 1077.0220000351.

The spelling of 1249320090 in words is "one billion, two hundred forty-nine million, three hundred twenty thousand, ninety".