1250211240 has 128 divisors (see below), whose sum is σ = 4264444800. Its totient is φ = 325624320.

The previous prime is 1250211227. The next prime is 1250211251. The reversal of 1250211240 is 421120521.

1250211240 is a `hidden beast` number, since 12 + 502 + 112 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32980 + ... + 59900.

It is an arithmetic number, because the mean of its divisors is an integer number (33315975).

Almost surely, 2^1250211240 is an apocalyptic number.

1250211240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1250211240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2132222400).

1250211240 is an abundant number, since it is smaller than the sum of its proper divisors (3014233560).

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

1250211240 is a wasteful number, since it uses less digits than its factorization.

1250211240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26984 (or 26974 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1250211240 is about 35358.3263178562. The cubic root of 1250211240 is about 1077.2780219693.

Adding to 1250211240 its reverse (421120521), we get a palindrome (1671331761).

The spelling of 1250211240 in words is "one billion, two hundred fifty million, two hundred eleven thousand, two hundred forty".